Logo

10 Worst Computer Viruses in history

Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

viruses10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent.
Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server.

Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation.
Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught.
Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging.
This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses.
As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last.
Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs.
The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter.
Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch.
The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries.
The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms.

Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage.
Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red.
Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic.
The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note.
The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million.
Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack.
Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million.
Other notable viruses

The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years:

Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove.

Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India.

Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably.

Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather.

Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries.

Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.”

Explorezip: This worm used fake emails to spread to every machine on thousands of local networks.

Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million.

Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs.

Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates.

Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.

Do You Need Help with Your Device?

Our Team of Experts May Help
Troubleshoot.Tech Experts are There for You!
Replace damaged files
Restore performance
Free disk space
Remove Malware
Protects WEB browser
Remove Viruses
Stop PC freezing
GET HELP
Troubleshoot.Tech experts work with all versions of Microsoft Windows including Windows 11, with Android, Mac, and more.

Share this article:

You might also like

10 Worst Computer Viruses in history
Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

viruses10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent. Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server. Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation. Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught. Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging. This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses. As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last. Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs. The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter. Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch. The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries. The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms. Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage. Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red. Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic. The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note. The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million. Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack. Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million. Other notable viruses The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years: Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove. Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India. Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably. Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather. Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries. Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.” Explorezip: This worm used fake emails to spread to every machine on thousands of local networks. Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million. Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs. Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates. Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.
Read More
Installation failed, ended prematurely
If you are trying to install or reinstall a program on your Windows 10 computer but encountered an error instead that says, “Fatal error, Installation fails, Installation ended prematurely because of an error”, then you’ve come to the right place as this post will guide you how you can fix it. This kind of error is most likely caused by some files that may have been left behind by the previous installation of the program. Each time a program is uninstalled, it leaves behind its files and if the uninstallation process wasn’t completed properly, then it would result in errors like the
“Fatal error, Installation fails, Installation ended prematurely because of an error”.
Moreover, this kind of error is a generic one that can also occur with any software reinstallation or installation. And to fix this error, there are several suggestions you must check out. You can try to install or reinstall the program in a Clean Boot State or restart the Windows Installer Service. You could also try to re-register the Windows Installer Service or re-register the VBScript.dll file.

Option 1 – Install or reinstall the program in a Clean Boot State

It is possible that there are some third-party applications in your computer that are preventing the program from getting installed and to isolate this possibility, you need to boot your computer in a Clean Boot State and then try installing the program again. Putting your computer in this state can help you identify which program is the culprit and thus isolates the problem. In a Clean Boot state, your computer will start using only the pre-selected minimal set of drivers and startup programs. Note that you have to disable and enable one process at a time.
  • Log onto your PC as an administrator.
  • Type in MSConfig in the Start Search to open the System Configuration utility.
  • From there, go to the General tab and click “Selective startup”.
  • Clear the “Load Startup items” checkbox and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
  • Next, click the Services tab and select the “Hide All Microsoft Services” checkbox.
  • Click Disable all.
  • Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
  • After you’ve set your computer into a Clean Boot State, make sure that you’re signed in as administrator and then try to install the program again.

Option 2 – Try to restart the Windows Installer Service

The next thing you can do to fix the problem is to restart the Windows Installer Service. To do this, follow these steps:
  • Tap the Win + R keys to launch the Run utility and type “services.msc” in the field and then hit Enter to open the Windows Services Manager.
  • Next, look for the Windows Installer service among the list of services shown.
  • Once you found it, right-click on it and open its Properties.
  • From there, click on the Stop button and then click on the Start button.
  • But if it isn’t running, then just click on the Start button.

Option 3 – Try to unregister and re-register the Windows Installer Module

  • Tap the Win + R keys to open the Run dialog box.
  • Then type the “msiexec /unregister” command and hit Enter to unregister the Windows Installer Module.
  • Next, type the “msiexec /regserver” command and hit Enter to re-register the Windows Installer Module.
  • Now restart your computer and see if unregistering and re-registering the Windows Installer Module fixed the problem or not.

Option 4 – Try to re-register the vbscript.dll file

You may have to re-register the vbscript.dll file using the regsvr32.exe before you can successfully install the program and fix the error. The Regsvr32 tool is a command-line utility that can be used to register and un-register the OLE controls like DLL and ActiveX (OCX) control in the Windows operating system. Follow the steps below to use it.
  • Open Command Prompt as admin from the WinX menu.
  • Next, type regsvr32.exe vbscript.dll in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
  • You should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.
Read More
A Quick Guide to Fixing Error Code 10

Error Code 10 - What is it?

Error code 10 is a type of Window Device Manager error code. This error code is generated when the Device Manager can’t start the hardware device or is experiencing device driver issues. It is displayed in the following format:

"This device cannot start. (Code 10)"

You can access complete details about error codes related to Device Manager such as code 10 through the Device Status area in the Device Properties.

By accessing Device Status, you can easily view the status of each device and learn about the specific device that could be causing the problem.

Solution

driverfix boxError Causes

Error code 10 can be triggered due to several reasons. These include:

  • Outdated drivers
  • Corrupted drivers
  • Incompatible drivers
  • Device configuration issues
  • Hardware compatibility problems

Device driver corruption can cause you great inconvenience and PC performance issues. The computer’s operating system relies heavily on device drivers to communicate with the hardware.

For example, the printer driver facilitates functioning of the printer. Similarly, the graphic card driver ensures proper video output on the monitor screen.

However, your PC hardware, such as printer or keyboard, may stop functioning properly if their device drivers become outdated or corrupt. Therefore to avoid inconvenience and to ensure your PC works properly, it is important to resolve the problem immediately without any delay.

Further Information and Manual Repair

To repair error code 10, you don’t have to be a technical whiz or hire a professional computer programmer. Here are some of the best and easy to perform DIY methods that can help you fix this device error in no time.

Method 1 - Reboot Your PC

Sometimes temporary problems in Device Manager can also generate code 10 error. Therefore it is advisable to restart your PC. Rebooting your system might fix the error. Try it! If it does, great, however, if the error still persists, then try other methods listed below.

Method 2 - Reinstall Drivers

Go through the Device Status in the Device Properties to view the driver causing the problem. If any driver is tagged with a yellow exclamation point, it means that driver is the one causing problems. Once identified, uninstall that driver and then reinstall it. This will hopefully resolve the problem.

Method 3 - Update the Device Driver

Whether the error code 10 is generated due to incompatible, corrupted, or outdated device drivers, simply update the device driver to resolve. To update the driver, go to the Device Manager, then click the driver tab in the device properties dialog box.

After that, click update driver. This will start the hardware update wizard. Then follow the instructions to update the driver on your PC. During this process, you may be prompted to provide the driver path.

If you don’t have it, then you will have to download the latest driver from the hardware vendor’s official website. This can be time-consuming and stressful.

Method 4 - Install DriverFIX

Another alternative is to install DriverFIX.  It is a user-friendly device driver management software with an intuitive interface.

Its intelligent algorithm is designed to detect all the problematic drivers in seconds. It automatically updates and accurately installs appropriate drivers and ensures your PC runs at its optimum level in no time.

Click here to download DriverFIX on your system to resolve error code 10.

Read More
How to Repair Error Code 0xC190010, 0x30018 in Windows 10

Error Code 0xC1900101, 0x30018? - What is it?

Users, when upgrading to Windows 10 from Windows 7 or Windows 8/8.1, or when upgrading to a new version, build, service pack, or major update of Windows 10, can encounter error code 0xC1900101, 0x30018. Windows 10 installation fails and stops or hangs. During the installation process, it will reach a certain maximum limit (normally at 6% or 32%) then reverts back to the previous version of the operating system and displays the following message:

We couldn’t install Windows 10. We’ve set your PC back to the way it was right before you started installing Windows 10.

0xC1900101 – 0x30018 The installation failed in the FIRST_BOOT phase with the error during the SYSPREP operation.

Solution

Restoro box imageError Causes

In attempting to fix Error Code 0xC1900101-0x30018, it is vital to know what causes this issue. The most probable causes of this error are:

  • Incompatible hardware or driver
  • Incompatible security programs or antivirus or incompatible utility software
  • A device driver possibly stopped responding to setup.exe while on the installation process.
In some cases, you might be opened to other error messages when attempting to update to Windows 10, including error code 8007002c.

Further Information and Manual Repair

In fixing issues related to error codes, it is best to employ manual repair methods. Using these methods helps users pinpoint the root causes of the issue and apply solutions permanently to fix the issues. While most manual repair methods can be done by every Windows user, even those without technical abilities, there are certain cases where help from a Windows professional is needed. If you’re not up to facing risks in implementing manual methods yourself, consider getting help from a professional Windows technician or you can use a powerful automated tool. In fixing Error Code 0xC1900101-0x30018, you can repeat the same steps used for 0xc000021a (Method One) or you can try doing the following:
  • Disable or uninstall your Antivirus program before proceeding to upgrade the system
  • Ensure that the machine name is simple (having at least 8 characters) with no special characters like hyphens or dashes.
  • Restart the device a few times then try again.
  • Disable General USB Devices such as the Smart Card Reader.
  • If you use an SCSI hard disk, ensure that you have available drivers you can use for your storage such as a thumb drive and make sure that it is connected. During the Windows 10 setup, select the Custom Advanced Option and use the Load Driver command to be able to load the suitable driver for the SCSI drive. If this fails, try switching to an IDE-based hard disk.
  • You can now perform a clean boot. Restart your device then try again.
  • If you are using the .ISO file for upgrading the system, you need to disconnect from the Internet first before proceeding to the setup. If you are connected to Wi-Fi or by Ethernet (LAN), make sure to disable both connections then you can proceed to set up again.
  • If you’re performing the update through Windows Update, once the download reaches 100%, disconnect from the Internet, and then proceed with the installation.

NOTE: If this fails, if possible, you can try using the .ISO file in upgrading.

  • Switch to a local account if the device is connected to a domain.
  • Disconnect all external devices attached to the computer such as gaming controllers, printers, or USB keys.

If you’re using Windows Update in installing Windows 10, you can implement the following:

  1. Open the Command Prompt window by pressing Windows Key + X. Select Command Prompt (Admin) from the menu.
  2. Stop the BITS, Cryptographic, MSI Installer, and the Windows Update Services. In order to do this, Type or Copy and Paste the following commands one at a time:

NOTE: Don’t forget to hit Enter after every command.

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

  1. Rename the Catroot2 and SoftwareDistribution In order to do this, Type or Copy and Paste the following commands one at a time:

NOTE: Don’t forget to hit Enter after every command.

                        ren

C:WindowsSoftwareDistribution SoftwareDistribution.old

                          ren

C:WindowsSystem32catroot2 Catroot2.old

  1. Restart the BITS, Cryptographic, MSI Installer, and the Windows Update Services. In order to do this, Type or Copy and Paste the following commands one at a time:

NOTE: Don’t forget to hit Enter after every command.

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

  1. Type Exit in the Command Prompt then close the Command Prompt window then restart the computer.
Can’t seem to put up with the long and technical manual repair process? You can still fix this error by downloading and installing a powerful automated tool that will surely get the job done in a jiffy!
Read More
Fix ATTEMPTED_WRITE_TO_READONLY_MEMORY
This post will help you fix the ATTEMPTED_WRITE_TO_READONLY_MEMORY Blue Screen issue with an error code 0x000000BE. If you encounter this kind of BSOD error when you try to boot into your Windows 10 computer, note that there are various possible causes for this error. It could be caused by an error with a device driver, hardware issues, or some error in the BIOS of your computer. The ATTEMPTED_WRITE_TO_READONLY_MEMORY Blue Screen error with a bug check of 0x000000BE appears when a driver tries to write a read-only memory segment. You’ll be able to see the name of the driver in the Blue Screen error if the driver that’s causing the error can be identified. You can also see it in memory at the location (PUNICODE_STRING) KiBugCheckDriver. In most cases, this kind of error is usually caused by various files such as iusb3hub.sys, ntkrnlpa exe or vhdmp.sys, ntoskrnl.exe, ntfs.sys, dxgkrnl.sys, tcpip.sys, atikmdag.sys, and win32k.sys. There are several possible fixes you can try to fix this issue but the main issue lies within booting into Windows since the error occurs as soon as you boot into your Windows 10 computer. Refer to each one of the options provided below to resolve the ATTEMPTED_WRITE_TO_READONLY_MEMORY Blue Screen error.

Option 1 – Try to rollback, update or disable drivers

The first thing you can do to fix the ATTEMPTED_WRITE_TO_READONLY_MEMORY Stop error is to roll back, or update, or disable device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.
  • Open the Devices Manager from the Win X Menu.
  • Then locate the device drivers and right-click on them to open the Properties.
  • After that, switch to the Driver tab and click on the Uninstall Device button.
  • Follow the screen option to completely uninstall it.
  • Finally, restart your computer. It will just reinstall the device drivers automatically.
Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

Option 2 – Try running the Memory Diagnostic Tool

The Memory Diagnostic tool in windows can help resolve the ATTEMPTED_WRITE_TO_READONLY_MEMORY Blue Screen error by checking and automatically fixing any memory-based issues. To run it, refer to these steps:
  • Tap the Win + R keys to open Run and type exe and hit Enter to open the Windows Memory Diagnostic Tool.
  • After that, it will give two options such as:
    • Restart now and check for problems (Recommended)
    • Check for problems the next time I start my computer
  • Once your computer has restarted, perform a basic scan or you could also go for the “Advanced” options such as “Test mix” or “Pass count”. Simply tap the F10 key to start the test.
Note: After you select your preferred option, your computer will restart and check for memory-based issues. If it finds any issues, it will automatically fix them and if there’s no issue found, then it’s most likely not a memory-based issue so you should try the other options given below.

Option 3 – Try to update the BIOS

Updating the BIOS can help you fix the ATTEMPTED_WRITE_TO_READONLY_MEMORY BSOD error but as you know, BIOS is a sensitive part of a computer. Even though it is a software component, the functioning of the hardware depends on it largely. Thus, you must be careful when modifying something in the BIOS. So if you don’t know much about it, it’s best if you skip on this option and try the other ones instead. However, if you are well-versed in navigating the BIOS, then follow the steps below.
  • Tap the Win + R keys to open the Run dialog box.
  • Next, type “msinfo32” in the field and press Enter to open System Information.
  • From there, you should find a search field on the bottom where you have to search for the BIOS version and then press Enter.
  • After that, you should see the developer and version of the BIOS installed on your PC.
  • Go to your manufacturer’s website and then download the latest version of BIOS on your computer.
  • If you are using a laptop, make sure that you keep it plugged in until you have updated the BIOS.
  • Now double click on the downloaded file and install the new BIOS version on your computer.
  • Now restart your computer to apply the changes made.

Option 4 – Try disabling BIOS Memory Options

Disabling the BIOS Memory options such as Caching and Shadowing can help you in fixing the ATTEMPTED_WRITE_TO_READONLY_MEMORY Stop error. All you have to do is enter the BIOS first and then use the Arrow and Enter keys to select your choices. And if you can’t seem to find it, look for specific instructions from your OEM or you could also look out for instructions from the manufacturer of your motherboard.

Option 5 – Try running the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like ATTEMPTED_WRITE_TO_READONLY_MEMORY. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:
  • Tap the Win + I keys to open the Settings panel.
  • Then go to Update & Security > Troubleshoot.
  • From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.
Read More
Fix DRIVER_VERIFIER_DETECTED_VIOLATION
Driver Verifier is a built-in tool in Windows 10 that monitors device drivers on your computer, if it detects issues with drivers, it will attempt to fix the issue. If you are encountering Blue Screen for a Driver and after running Driver Verifier you get another with message DRIVER_VERIFIER_DETECTED_VIOLATION ten follow this article step by step in order to solve it. There is a chance that you will maybe even have to do this in safe mode, if that is your case, login into safe mode and proceed, otherwise proceed normally.
  1. Update Device Drivers

    the most common issue with the blue screen is old Drivers, in most cases, graphical drivers, update all Drivers with the latest versions and see if this will resolve the issue.
  2. Stop or uninstall Virtualization software

    Virtua machine software is a great way to have a safe environment and to experiment while preserving your Windows installation intact, however sometimes due to the nature of these applications they can be a case for blue screen errors. Stop virtualization software to see if it will remove the issue. If that is the case, try another virtualization application
  3. Disable Driver Verifier

    Press ⊞ WINDOWS + X to open the secret menu Click on Command Prompt (admin) Inside command prompt type: verifier and press ENTER Select the Delete existing settings radio button Click Finish Reboot your computer
  4. Reset Driver Verifier

    Press ⊞ WINDOWS + X to open the secret menu Click on Command Prompt (admin) Inside command prompt type: verifier /reset and press ENTER Reboot your computer
  5. Use system restore

    Rollback Windows to the previous state where everything was working fine.
Read More
System Restore gets stuck or hangs up
As you know, System Restore is a useful tool in Windows operating system that helps users in fixing system issues by undoing any recent changes to the computer that may have caused the problem. However, there are times when you might encounter some issues when running this tool and one of these issues is when System Restore suddenly gets stuck or hangs up on initializing the restoration of the Registry in Windows 10. If you encounter a similar problem, read on as this post will guide you on what you can do in such cases. There are several things you can do when you face this kind of problem in System Restore. First, you can try to wait it out, give it more time to load, which should not take longer than 5 minutes. And if it’s still stuck after that time, give it another hour. However, if nothing changed after an hour, then you need to troubleshoot the problem further. Keep in mind that you must not interrupt System Restore by shutting it down abruptly, it could result in an unbootable system. To get started in troubleshooting the problem, you need to follow each one of the suggestions offered below.

Option 1 – Try to use the Windows Recovery Environment

The first troubleshooting option you need to try is to simply tap the power button for about 10 seconds. This is what you have to do when you have to interrupt System Restore or reset your Windows 10 computer. Tapping the power button for 10 seconds will perform a hard shutdown and once your computer shuts down, restart your computer again and follow the steps below but before you do that, make sure that you have a Windows bootable USB or DVD.
  • First, insert the bootable USB or DVD and boot into it, and select the “Repair your computer” option.
  • Next, once you see the manufacturer logo on your computer, tap the key to enter into Windows Recovery Environment.
  • After that, change the Boot sequence to DVD drive under the UEFI Firmware settings and restart your computer.
  • Once your computer has restarted, select the boot order and make changes accordingly as displayed in the BIOS.

Option 2 – Try to run the Automatic Repair Utility

You might also want to use Automatic Repair in fixing the error. To do so, follow the steps below.
  • You can start by creating and booting from a bootable Windows 10 USB Stick.
  • After that, click on Repair your computer located on the bottom left corner when you are on the initial Windows Startup screen.
  • Next, click on Troubleshoot, and then on the other screen, click the Startup Repair option.
  • Now select the operating system you want to repair. Once you do that, it will start to repair your operating system. Wait until the process is completed and then check if the problem’s now fixed.

Option 3 – Try to run System Restore in Safe Mode

If you can’t boot into your Windows 10 computer, you can try to run System Restore again in the Advanced Startup Options.
  • Boot your computer into Safe Mode.
  • After that, select an option > Troubleshoot > Advanced Options > Startup Settings > Restart.
  • Once your computer has restarted, tap the F6 key to enable Safe Mode with Command Prompt and to run System Restore from there.
  • Now in Command Prompt, type the “rstrui.exe” command to run System Restore in Safe Mode. This will help in fixing the problem since it would be safer to perform System Restore of the computer.
Read More
Explanation of deep and dark WEB
Often when we connect to the internet were browsing indexed pages through some well-known search engine, usually Google. But beneath the so-called normal internet lurks deep and dark web. You might have heard of the deep web and dark web if you have some geeky friends and we are here to explain what exactly is the deep and dark web. The first thing to know is that the deep and dark web is not the same thing and they coexist separately from one another, you could say that beneath the deep web lies the dark web, yet another layer of the internet. So let us explore first the deep web. What is exactly a deep web?

Deep web, hidden web, or invisible web

as sometimes referenced are part of worldwide web not indexed by search engines, meaning that engines do not basically see and index content of deep web sites. The content of the deep web is hidden behind HTTP forms and includes many very common uses such as webmail, online banking, private or otherwise restricted access social-media pages and profiles, some web forums that require registration for viewing content, and services that users must pay for, and which are protected by paywalls, such as video on demand and some online magazines and newspapers. The content of the deep web can be located and accessed by a direct URL or IP address but may require a password or other security access to get past public website pages. While it is not always possible to directly discover a specific web server's content so that it may be indexed, a site potentially can be accessed indirectly (due to computer vulnerabilities). To discover content on the web, search engines use web crawlers that follow hyperlinks through known protocol virtual port numbers. This technique is ideal for discovering content on the surface web but is often ineffective at finding deep web content. For example, these crawlers do not attempt to find dynamic pages that are the result of database queries due to the indeterminate number of queries that are possible. It has been noted that this can be (partially) overcome by providing links to query results, but this could unintentionally inflate the popularity of a member of the deep web.

Dark WEB

The dark web is the World Wide Web content that exists on darknets: overlay networks that use the Internet but require specific software, configurations, or authorization to access. Through the dark web, private computer networks can communicate and conduct business anonymously without divulging identifying information, such as a user's location. The dark web forms a small part of the deep web, the part of the Web not indexed by web search engines, although sometimes the term deep web is mistakenly used to refer specifically to the dark web. The darknets which constitute the dark web include small, friend-to-friend peer-to-peer networks, as well as large, popular networks such as Tor, Freenet, I2P, and Riffle operated by public organizations and individuals. Users of the dark web refer to the regular web as Clearnet due to its unencrypted nature. The Tor dark web or Onionland uses the traffic anonymization technique of onion routing under the network's top-level domain suffix .onion.

Dark & Deep WEB difference

The dark web has often been conflated with the deep web, the parts of the web not indexed (searchable) by search engines. The dark web forms a small part of the deep web but requires custom software in order to access its content. This confusion dates back to at least 2009. Since then, especially in reporting on Silk Road, the two terms have often been conflated, despite recommendations that they should be distinguished. Darknet websites are accessible only through networks such as Tor ("The Onion Routing" project) and I2P ("Invisible Internet Project"). Tor browser and Tor-accessible sites are widely used among darknet users and can be identified by the domain ".onion". While Tor focuses on providing anonymous access to the Internet, I2P specializes in allowing anonymous hosting of websites. Identities and locations of darknet users stay anonymous and cannot be tracked due to the layered encryption system. The darknet encryption technology routes users' data through a large number of intermediate servers, which protects the users' identity and guarantees anonymity. The transmitted information can be decrypted only by a subsequent node in the scheme, which leads to the exit node. The complicated system makes it almost impossible to reproduce the node path and decrypt the information layer by layer. Due to the high level of encryption, websites are not able to track the geolocation and IP of their users, and users are not able to get this information about the host. Thus, communication between darknet users is highly encrypted allowing users to talk, blog, and share files confidentially.

Darknet

The darknet is also used for illegal activity such as illegal trade, forums, and media exchange for pedophiles and terrorists. At the same time, traditional websites have created alternative accessibility for the Tor browser in an effort to connect with their users. ProPublica, for example, launched a new version of its website available exclusively to Tor users.
Read More
Fix Winload.efi file missing error
The Winload.efi file is an Extensible Firmware Interface or EFI file. EFI files are executable files for the firmware of the computers that are mainly based on UEFI and execute the tasks of loading the files to the bootloader of the computer. They are used for a specific set of tasks such as turning on the computer, installing Windows, restarting the computer or resetting it, and so on. This is why the Winload.efi file is a significant file so if it gets corrupted, lost, or damaged, it would be impossible for the Windows operating system to proceed. Here are some errors you can encounter that are related to the Winload.efi file:
  • efi is missing
  • efi cannot be found
  • efi is missing or contains errors
  • This program can’t start because winload.efi is missing from your computer
  • This application requires the file winload.efi, which was not found on this system.
  • There was a problem starting [path]winload.efi. The specified module could not be found.
In addition, the 0xc0000225 , 0xc00000e and 0xc0000001error codes are also associated with the Winload.efi file. Before you start troubleshooting the problem, you can try to perform System Restore first. This will help undo any changes you’ve made in your computer that might have triggered the Blue Screen error. To perform System Restore, here’s what you have to do:
  • First, press the Win + R keys to open the Run dialog box.
  • After that, type in “sysdm.cpl” in the field and tap Enter.
  • Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
  • After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.
If System Restore didn’t help in fixing the Blue Screen error, now’s the time for you to resort to the troubleshooting tips provided below but before you get started, make sure that your create a System Restore point first.

Option 1 – Try rebuilding the Boot Configuration Data (BCD) and repairing MBR

  • Once you get to the Welcome Screen part, click on Next.
  • Afterwards, click on the Repair your computer option located on the bottom-left part of the window.
  • Then click on Troubleshoot.
  • Next, select the Advanced Options and then Command Prompt.
  • Once Command Prompt has been pulled up, the following commands to rebuild BCD files and repair MBR. Don’t forget to hit Enter right after you type each command.
    • bootrec /repairbcd
    • bootrec /osscan
    • bootrec /repairmbr
  • Once the command line is successful in finding out a Windows installation, hit Y to let it boot from the list which will successfully rebuild BCD.
  • Now type “exit” to close Command Prompt and then restart your computer to successfully apply the changes made.

Option 2 – Disable the Secure Boot in the BIOS

Disabling the Secure Boot in the BIOS settings is definitely recommended to resolve errors related to the Winload.efi file. To disable Secure Boot, here’s what you have to do:
  • First, boot your computer into Windows 10.
  • Next, go to Settings > Windows Update. From there, check if there is anything that you have to download and install if you see any available updates. Usually, OEMs send and update the list of trusted hardware, drivers, and operating systems for your computer.
  • After that, go to the BIOS of your computer.
  • Then go to Settings > Update & Security > Advanced Startup options. If you click on Restart Now, it will restart your computer and give you all the advanced options.
  • Next, select Troubleshoot > Advanced Options. As you can see, this screen offers you further options including System restore, Startup repair, Go back to the previous version, Command Prompt, System Image Recovery and UEFI Firmware Settings.
  • Select the UEFI Firmware Settings which will take you to the BIOS.
  • From there, go to Security > Boot > Authentication tab where you should see Secure Boot. Note that every OEM has its own way of implementing the options so it varies.
  • Next, set Secure Boot to Disabled and set Legacy Support to On or Enabled.
  • Save the changes made and exit. Afterward, your computer will reboot.

Option 3 – Run System File Checker scan

You might also try running the System File Checker or SFC scan to fix the error. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:
  • Hit the Win + R keys to launch Run.
  • Type in cmd in the field and tap Enter.
  • After opening Command Prompt, type in sfc /scannow
The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:
  1. Windows Resource Protection did not find any integrity violations.
  2. Windows Resource Protection found corrupt files and successfully repaired them.
  3. Windows Resource Protection found corrupt files but was unable to fix some of them
  • Reboot your computer.

Option 4 – Disable the Early Launch Anti-Malware Protection

  • You need to restart your computer in the Start Menu first while holding down the Shift key on your keyboard.
  • After that, it will restart your computer to Startup Settings.
  • Now ensure that the 8th option is labeled as “Disable early launch anti-malware protection.
  • Then tap the F8 key since the aforementioned option above is listed at number 8. This should launch and load Windows on your PC with the Early Anti-malware protection disabled for that session only when you try to carry out the same task and then check if the error related to the Winload.efi file is now fixed.
Read More
Hide game activity and set privacy on Steam
Steam is a game store behemoth that offers more titles than any other game store online, take that along with the fact that steam was one of the first online dedicated stores for games and you can guess that many people have a steam account, buy and play games on it. It is a platform where you can meet new people in games and add them as friends on steam so you can spend some time together. But happens if you want to have friends on Steam but you would like to hide your game activity? Or even if you want to go fully private on Steam so no one can find you so you can play whatever you want without paying and judging eyes? Luckily Valve appreciates your privacy and offers ways to do exactly this. Keep on reading on how to set up your privacy settings in Steam.

Hiding Steam game activity

  • Launch Steam on your PC.
  • Go to the top bar of Steam and click on your name.
  • Select Profile from the context menu.
  • Click on the Edit Profile button present at the right section of the window.
  • Next, click on the My Privacy Settings button.
  • Now, the Privacy Settings page will be opened.
  • Scroll down and go to the My Profile section.
  • Open the drop-down list given next to the Game Details and select the Private option.
  • Now, check if this process is working or not. For this, right-click anywhere on the blank space in the Steam screen > choose the Copy Page URL option.
  • Then, open a browser and paste the copied page URL in the address bar and check whether your Steam game activity is hidden or not.

Making profile private

  • Launch Steam > click on your name > select Profile from the menu list.
  • Click on the Edit Profile > My Privacy Settings button.
  • Go to the My Profile and open the dropdown menu.
  • Click on the Private option.
  • Now, the changes will be saved automatically.
If you would like to read more helpful articles and tips about various software and hardware visit errortools.com daily.
Read More
1 2 3 171
Logo
Copyright © 2023, ErrorTools. All Rights Reserved
Trademark: Microsoft Windows logos are registered trademarks of Microsoft. Disclaimer: ErrorTools.com is not affiliated with Microsoft, nor claims direct affiliation.
The information on this page is provided for information purposes only.
DMCA.com Protection Status