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.

10 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.

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InternetSpeedTracker Removal Guide

InternetSpeedTracker is a browser extension developed by MindSpark Inc. This browser add-on offer uses tips on how to boost their “bad” internet connection speed. It displays false internet speed in order to get you to open the sponsored links listed in the toolbar.

This extension also hijacks your browser home page and replaces your default search engine with MyWay. While browsing the internet you will see additional unwanted sponsored ads and links throughout your search results, and sometimes even pop-up ads might appear. While active this extension gathers personal information, website visits, links, and clicks and uses this data to serve ads.

InternetSpeedTracker has been flagged as a Browser Hijacker by several anti-virus scanners, and due to its data mining behavior, it is not recommended to keep it on your computer, especially because it gives false data about your internet speed.

About Browser Hijackers

Browser hijack is a very common type of online fraud where your internet browser settings are modified to allow it to carry out things you don’t intend. They’re created to disrupt browser functions for several purposes. It redirects you to the sponsored sites and inserts ads on the web browser which helps its developer generate earnings. Nevertheless, it’s not that naive. Your web safety is jeopardized and it is also extremely irritating. They don’t just ruin your web browsers, but browser hijackers could also modify the computer registry, making your PC vulnerable to other attacks.

How one can know if your web browser is hijacked

Signs that an internet browser is a hi-jacked include: the browser’s home-page is modified; you find yourself regularly directed to a different site than the one you meant; the default search engine is changed; unwanted new toolbars are added to your web browser; never-ending pop-up ads show up and/or your browser pop-up blocker is disabled; your web browser starts running sluggishly or displays frequent glitches; You simply can’t access specific sites, particularly anti-virus sites.

How they infect PCs

A browser hijacker can be installed on your computer when you check out an infected website, click an e-mail attachment, or download something from a file-sharing website. They are usually included with toolbars, BHO, add-ons, plugins, or browser extensions. A browser hijacker could also be installed as a part of freeware, shareware, demoware, and fake programs. A good example of a notorious browser hijacker is the most recent Chinese malware known as “Fireball”, which has attacked 250 million computer systems worldwide. It acts as a hijacker but can be turned into a fully functioning malware downloader afterward. Browser hijackers could affect the user’s browsing experience greatly, keep track of the websites visited by users and steal private information, cause difficulty in connecting to the internet, and ultimately create stability issues, making software programs and systems freeze.

How to repair a browser hijack

Some hijackers could be removed by uninstalling the freeware they came with or by eliminating any extension you have recently added to your system. But, many hijackers are hard to get rid of manually. No matter how much you attempt to eliminate it, it can keep coming back over and over again. And there’s no denying the fact that the manual fixes and removal methods can be quite a complicated job for a rookie PC user. Furthermore, there are several risks connected with fiddling around with the system registry files.

What you can do if Virus Stops You From Downloading Anything?

Malware could cause all kinds of damage after they invade your system, ranging from stealing your private information to deleting data files on your computer system. Certain malware variants modify web browser settings by adding a proxy server or modify the computer’s DNS configuration settings. In such cases, you’ll be unable to visit some or all of the websites, and thus not able to download or install the necessary security software to remove the infection. If you’re reading this article, chances are you’re stuck with a virus infection that is preventing you to download or install the Safebytes Anti-Malware program on your PC. There are some fixes you can try to get around with this issue.

Install antivirus in Safe Mode with Networking

If the malware is set to load at Windows startup, then booting in Safe Mode should prevent it. Since only the minimal programs and services start-up in safe mode, there are rarely any reasons for issues to take place. Listed below are the steps you should follow to start your computer into the Safe Mode of your Windows XP, Vista, or 7 computers (visit Microsoft site for instructions on Windows 8 and 10 PCs). 1) At power on/start-up, tap the F8 key in one-second intervals. This will bring up the Advanced Boot Options menu. 2) Select Safe Mode with Networking with arrow keys and hit Enter. 3) As soon as this mode loads, you will have an internet connection. Now, utilize your web browser normally and navigate to https://safebytes.com/products/anti-malware/ to download and install Safebytes Anti-Malware. 4) Right after the software program is installed, let the diagnostic scan run to remove trojans and other malware automatically.

Switch to an alternate web browser

Web-based viruses can be environment-specific, aiming for a particular internet browser or attacking specific versions of the browser. The best solution to avoid this issue is to opt for a browser that is known for its security features. Firefox comprises built-in Phishing and Malware Protection to keep you safe online.

Run anti-virus from a pen drive

Another technique is to download and transfer an anti-malware application from a clean PC to run a scan on the affected computer. Follow these steps to use a flash drive to clean your infected system. 1) Download Safebytes Anti-Malware or Microsoft Windows Defender Offline onto a clean PC. 2) Insert the pen drive on the same system. 3) Double-click the Setup icon of the anti-malware software package to run the Installation Wizard. 4) Pick a USB flash drive as the place when the wizard asks you exactly where you would like to install the application. Follow the instructions on the computer screen to complete the installation process. 5) Now, transfer the pen drive to the infected computer. 6) Run the Safebytes Anti-malware directly from the thumb drive by double-clicking the icon. 7) Click the “Scan” button to run a full system scan and remove malware automatically.

Let's Talk About SafeBytes Anti-Malware!

Want to install the best anti-malware application for your laptop or computer? There are many applications available in the market which comes in free and paid versions for Windows computers. Some of them are great and some are scamware applications that pretend as legitimate anti-malware programs waiting to wreak havoc on your PC. When looking for an antimalware program, pick one which gives reliable, efficient, and total protection against all known viruses and malware. One of the recommended tools by industry leaders is SafeBytes Anti-Malware, the most dependable program for Windows computers. SafeBytes anti-malware is a reliable tool that not only secures your system permanently but is also quite user-friendly for people of all ability levels. This application could easily identify, remove, and protect your personal computer from the most advanced malware attacks such as spyware, adware, trojan horses, ransomware, worms, PUPs, and other possibly damaging software applications. SafeBytes has excellent features when compared to other anti-malware programs. Below are a few of the great ones: World-class AntiMalware Protection: Built upon a greatly acclaimed anti-virus engine, this malware removal application can identify and remove numerous obstinate malware threats such as browser hijackers, PUPs, and ransomware that other common antivirus applications will miss. Live Protection: SafeBytes gives real-time active supervision and protection from all known viruses and malware. They’re very effective in screening and eliminating different threats because they are regularly improved with new updates and alerts. Web Security: SafeBytes provides an instant safety rating on the web pages you are going to visit, automatically blocking risky sites and making sure that you are certain of your safety while browsing the internet. Very Low CPU and Memory Usage: SafeBytes provides complete protection from online threats at a fraction of the CPU load due to its enhanced detection engine and algorithms. Premium Support: SafeBytes provides 24/7 technical support, automatic maintenance, and updates for the best user experience.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove InternetSpeedTracker without the use of an automated tool, it may be possible to do so by removing the program from the Windows Add/Remove Programs menu, or in cases of browser extensions, going to the browsers AddOn/Extension manager and removing it. You will likely also want to reset your browser. To ensure the complete removal, manually check your hard drive and registry for all of the following and remove or reset the values accordingly. Please note that this is for advanced users only and may be difficult, with incorrect file removal causing additional PC errors. In addition, some malware is capable of replicating or preventing deletion. Doing this in Safe Mode is advised.

The following files, folders, and registry entries are created or modified by InternetSpeedTracker

Files: C:DOCUME1USER1LOCALS1Tempnsk1.tmp C:b418207fbd4b466002312b66521c390947518e9a0d787e4e059af0505f607f3e C:DOCUME1USER1LOCALS1Tempnsk2.tmp C:DOCUME1USER1LOCALS1Tempnsk2.tmpnsDialogs.dll C:DOCUME1USER1LOCALS1Tempnsk2.tmpSystem.dll C:DOCUME1USER1LOCALS1Tempnsk2.tmpnsDialogs.dll C:DOCUME1USER1LOCALS1Tempnsk2.tmpSystem.dll C:Program FilesInternetSpeedTracker_9tEIInstallr.binNP9tEISb.dl_ C:PROGRA1INTERN2Installr.binNP9tEISb.dl_ C:Program FilesInternetSpeedTracker_9tEIInstallr.binNP9tEISb.dll C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEIPlug.dl_ C:PROGRA1INTERN2Installr.bintEIPlug.dl_ C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEIPlug.dll C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEZSETP.dl_ C:PROGRA1INTERN2Installr.bintEZSETP.dl_ C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEZSETP.dll C:WINDOWSsystem32rundll32.exe C:Program FilesInternetSpeedTracker_9tEIInstallr.binNP9tEISb.dl_ C:Program FilesInternetSpeedTracker_9tEIInstallr.binNP9tEISb.dll C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEIPlug.dl_ C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEIPlug.dll C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEZSETP.dl_ C:Program FilesInternetSpeedTracker_9tEIInstallr.bintEZSETP.dll Registry: HKLMSOFTWAREClassesInternetSpeedTracker_9t.HTMLMenu HKLMSOFTWAREClassesInternetSpeedTracker_9t.HTMLPanel HKLMSOFTWAREClassesInternetSpeedTracker_9t.SettingsPlugin HKLMSOFTWAREClassesInternetSpeedTracker_9t.ToolbarProtector HKLMSOFTWAREWow6432NodeMicrosoftWindowsCurrentVersionexplorerBrowser Helper Objects9e28b297-11d4-4293-aa6f-558658ee66ae HKLMSOFTWAREWow6432NodeMicrosoftWindowsCurrentVersionexplorerBrowser Helper Objectscc28794a-99d4-4b1b-bccf-b065ce5f9feb HKLMSOFTWAREWow6432NodeInternetSpeedTracker_9t HKLMSYSTEMControlSet001servicesInternetSpeedTracker_9tService HKLMSYSTEMCurrentControlSetservicesInternetSpeedTracker_9tService HKUS-1-5-21-1633355155-4214755471-2067616181-1000SoftwareAppDataLowSoftwareInternetSpeedTracker_9t HKLMSOFTWAREWow6432NodeMicrosoftWindowsCurrentVersionRunInternet Speed Tracker EPM Support

Lock folder with password in Windows 10

Hello and welcome everyone. In today's article, you will learn how to lock folder and content in it. Please be aware of few things:

The method is shown here works, but you need to be careful and follow step by step or you will damage your files permanently,
If you forget your password, you can not access your files anymore
Your files altho protected can still show up in recent files of some applications

All of that being said, let us start with locking the local folder on the computer with the password. Go to the folder where you have files that you would like to hide and lock with a password. Enter the folder and create the new text file inside it. Skip the name for now and go inside it. Copy and paste the following code inside the file:

cls @ECHO OFF title Folder Locker if EXIST "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" goto UNLOCK if NOT EXIST Locker goto MDLOCKER :CONFIRM echo Are you sure u want to Lock the folder(Y/N) set/p "cho=>" if %cho%==Y goto LOCK if %cho%==y goto LOCK if %cho%==n goto END if %cho%==N goto END echo Invalid choice. goto CONFIRM :LOCK ren Locker "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" attrib +h +s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" echo Folder locked goto End :UNLOCK echo Enter password to Unlock folder set/p "pass=>" if NOT %pass%==Your-Password-Here goto FAIL attrib -h -s "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" ren "Control Panel.{21EC2020-3AEA-1069-A2DD-08002B30309D}" Locker echo Folder Unlocked successfully goto End :FAIL echo Invalid password goto end :MDLOCKER md Locker echo Locker created successfully goto End :End

Now locate this line of code in the document: if NOT %pass%==Your-Password-Here goto FAIL and replace Your-Password-Here with your password. !!! Write down somewhere your password, if you lose it you will lock the folder even for you !!! Save the file as FolderLocker.bat and double-click on it to execute it. If everything was done correctly, a new folder with the name: Locker Move files that you want to hide and protect inside that folder. Double click again on FolderLocker.bat The command prompt will appear with the question do you want to lock the folder, press Y, and press ENTER. The command prompt will close and the Locker folder will disappear. In order to unhide and access the folder, you will need to double click on FolderLocker.bat again but this time command prompt with ENTER your password will appear. Type in your chosen password and the folder is back. If you wish to hide and lock it again just double click on FolderLocker.bat again, confirm with Y and it is hidden again.

VirtualBox FATAL:No bootable medium found!

If you continuously encountered the “VirtualBox FATAL: No bootable medium found, System halted” error when you try to install Windows 10 in VirtualBox, read on as this post will give you some potential fixes to resolve the problem – you will be guided on how to choose the ISO image to fix this error in VirtualBox. This kind of error is a very common one especially if you have a corrupted ISO file or if you have not selected an ISO file for your virtual machine. Like pointed out, this error pops up when you have a corrupted ISO file or if the ISO file is not attached to the virtual machine. You have to select the ISO file while you create the virtual hard disk, else, you will most likely face this problem, and to fix it, you need to download fresh Windows ISO, create a new IDE Controller, assign Windows ISO to the IDE Controller and then boot your virtual machine. For detailed steps, follow the instructions below but before you start, make sure that you have a valid and uncorrupted Windows ISO. Step 1: First, you need to open the VirtualBox program on your computer and select the virtual machine. Step 2: Next, click on the Settings button or you can also right-click on the virtual machine and select Settings from the context menu. Step 3: Once you’re in the Settings panel, go to the Storage section and from there, create a Controller: IDE. Step 4: To create a Controller: IDE, click the Add new storage controller icon and select the “Add IDE Controller” option. Step 5: After that, click the Add optical drive icon and click on the Choose disk button. You will then see all the attached and non-attached ISO files. However, you have to add the new ISO file that you just downloaded. Step 6: To add the new ISO file, click the Add button and select the ISO file and then select the .iso file from the Non Attached section. Step 7: Now click the Choose button and afterward, make a checkmark in the Live CD/DVD checkbox and then select the IDE Primary Master from the drop-down menu of the Optical Drive. Step 8: Once you’re done, save the changes made and try booting into your virtual machine again.

Fix Windows Update Error 0x800F081F – 0x20003

If you are trying to upgrade your computer but encounter the Windows Update Error 0x800F081F – 0x20003 instead, then read on as this post will guide you in fixing this Windows Update error. This kind of error is commonly encountered when upgrading your copy of Windows 10 and is caused by errors with various developer-related settings that are being enabled in the system. When you encounter Windows Update Error 0x800F081F – 0x20003, you will see either of these error messages:

“We couldn’t install Windows 10. The installation failed in the SAFE_OS phase with an error during INSTALL_UPDATES operation: Error 0x800F081F” “The installation failed in the Safe_OS phase with an error during apply_image operation: Error: 0x800f081f – 0x20003”

To fix this kind of Windows Update error, you need not use external programs but you can try to disable the Developer Mode, run the Windows Update troubleshooter or restart all the Windows Update-related services and components. For more details, refer to the options provided below.

Option 1 – Try to disable Developer Mode

You might have to disable Developer Mode to fix the Windows Update Error 0x800F081F – 0x20003. How? Refer to these steps:

Tap the Win + I keys on your keyboard to open the Settings app.
Next, go to Update & Security > For Developers.
From there, select the toggle for Sideload apps or Microsoft Store apps located on the right-side panel.
If you get any prompt, just click on Yes.
After that, navigate to Apps > Apps & features and then click on Optional features on the right-side panel.
Then scroll down to locate the Windows Developer Mode entry and select it and click on Uninstall.
Once you’re done uninstalling the Windows Developer Mode component, close the Settings app and restart your computer to apply the changes made.

Option 2 – Try to run the Windows Update Troubleshooter

You should also try to run the built-in Windows Update troubleshooter as it could help you resolve the Windows Update Error 0x800F081F – 0x20003. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

Option 3 – Try restarting various Windows Update-related services and components

Tap the Win + X key combination and select Command Prompt (Admin) to open Command Prompt with admin privileges.
After opening Command Prompt, copy and paste each one of the commands listed below one by one and tap Enter right after you enter each command.
- net stop wuauserv
- net stop bits
- net stop appidsvc
- ren %systemroot%SoftwareDistribution SoftwareDistribution.bak
- ren %systemroot%system32catroot2 catroot2.bak
Once you’ve entered all the commands given above, they will stop all the Windows Update services that are running on your computer as well as clear the SoftwareDistribution folder, and reset the Catroot2 folder. Now you have to start all these Windows Update services you’ve just stopped by executing the following commands:
- net start wuauserv
- net start bits
- net start appidsvc
- net start cryptsvc
After that, restart your computer and try to run the setup again, and see if the error is now fixed.

How to Fix Chrome error 1603 & 0x00000643

If you encounter errors 1603 and 0x00000643 on your Windows 10 computer while trying to install or update your Google Chrome browser. Although most errors can be fixed by some simple troubleshooting steps, that is not the case for these two errors since they have pretty specific solutions. To resolve errors 1603 and 0x00000643 on your Chrome browser, here are some solutions you need to check out.

Option 1 – Try to run Microsoft Install and Uninstall Troubleshooter

Running the Microsoft Install and Uninstall Troubleshooter could help you fix errors 1603 and 0x00000643 in Chrome as well as the following issue in your Windows 10 computer:

Corrupted registry keys on 64-bit operating systems.
Corrupted registry keys that control the updated data.
Problems that:
- Prevent new programs from being installed.
- Prevent new programs from being installed.
- Problems that block you from uninstalling a program through Add or Remove Programs (or Programs and Features) in Control Panel.

To use the Microsoft Install and Uninstall Troubleshooter, refer to the given steps below.

First, right-click on the downloaded MicrosoftProgram_Install_and_Uninstall.meta.diagcab file and run it with administrative privileges.
Next, it will offer you two scenarios to troubleshoot namely, “Installing” or “Uninstalling” and you have to select Installing to resolve the current errors.
After that, it will show you a list of available programs on your computer. From there, select Google Update Helper and then click Next.
It will then start to troubleshoot the problem and will automatically apply the fixes for you. It will offer you to uninstall Chrome if it turns out that it’s the root cause of the problem.
After that, you need to download Google Chrome again and then reinstall it.

Option 2 – Try to clean reinstall Chrome

There are instances when programs leave files behind after you’ve uninstalled them and the same thing can happen to Chrome so before you reinstall Chrome, you have to make sure that you have deleted the User Data folder. To do so, refer to the following steps:

Hit the Win + R keys to open the Run dialog box.
Next, type “%LOCALAPPDATA%GoogleChromeUser Data” in the field and hit Enter to open the User Data folder.
From there, rename the default folder and name it something else, e.g. “Default.old”.
After that, install Google Chrome again and check if the issue is now fixed.

Option 3 – Try running the Chrome Cleanup tool

You might want to run Google Chrome’s built-in Malware Scanner & Cleanup tool as it could also help in getting rid of any unwanted ads, pop-ups, and even malware, as well as unusual startup pages, toolbars, and anything else that might overtake the network and could affect the performance of the browser.

Option 4 – Try to run the Network Troubleshooter

Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
Next, scroll down and select the “Network Adapter” option from the right pane.
Then click on the Run Troubleshooter” button.
After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Option 5 – Reset Chrome

Resetting Chrome can also help you fix the error. This means that you will be restoring its default settings, disabling all the extensions, add-ons, and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

Open Google Chrome, then tap the Alt + F keys.
After that, click on Settings.
Next, scroll down until you see the Advanced option, once you see it, click on it.
After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
Now restart Google Chrome.

How to Turn Bluetooth ON in Windows 11

Bluetooth perhaps is slowly becoming an outdated feature but sometimes you can really used it and need it. By default, in Windows 11 Bluetooth is turned OFF so if you need it, you will need to turn it ON first. Luckily turning it ON is easy and we will guide you through the process

Turning Bluetooth using the Quick Settings menu

The easiest and fastest way to turn the Bluetooth ON is using the quick setting menu:

Click on indicator icons located left of date and time in Taskbar
Click on the Bluetooth icon (if the icon is not displayed, click on the pencil icon, then click on Add and add Bluetooth icon from the list)
Right-click on the Bluetooth icon and select go to Settings
Go to Adding a Bluetooth Device to Windows 11 section

Switch it ON via Windows Settings

Open Windows settings by using ⊞ WINDOWS + I combination
Click on Bluetooth & Devices
Inside settings turn Switch to ON beside Bluetooth
Click + Add Device large button on top
Click Bluetooth
Select device in the list of found devices (make sure device is turned ON, it has Bluetooth sharing ON, and that it is in pairing mode)
If the device needs the password, type it in
When the message Your device is ready to go is showed on the screen click on the Done

Advice on Bluetooth devices

Note that the Bluetooth devices you connect to Windows 11 stay linked to your PC unless you pair them with a different PC, smartphone, or tablet later. After a time, most Bluetooth devices power down automatically to save battery life. To continue where you left off, either power the Bluetooth device up (if it has a power button) or press a button on a keyboard or mouse, and it should automatically turn on and reconnect with your PC. If you’re having trouble connecting your Bluetooth device, make sure that Windows 11 is fully updated and that you’ve installed any drivers that came with your device. Make sure that the device is fully charged or that it has a fresh set of batteries. while Windows is searching. You’ll need to remove the device from Windows 11 first and then attempt to pair it with your PC again.

Removing devices

If you need to remove (un-pair) a Bluetooth device, just open Windows Settings and navigate to Bluetooth & Devices. Locate the name of the device that you want to remove, click the three dots button in the corner of its square and select Remove Device.

Mail and Calendar not working with Cortana

Mail and Calendar not working with Cortana? As you know, Cortana was first launched way back in 2014 with an emphasis on its tight integration with both the Windows Mail and Calendar apps. This integration has been one of the highlighting features of this Personal Digital Assistant. However, there are some users who reported that the Calendar and Mail integration with Cortana is not working on their Windows 10 computers. This kind of problem could be due to several factors like the loose integration between the services, incompatible versions of the components, and many more. According to the users who experienced the issue, the features affected are the syncing of calendar appointments, sending emails via Cortana, and so on. To fix this problem, there are several options you can try. You can try to restart Cortana’s processor run the Windows Store Apps troubleshooter. You could also try to relink your Microsoft account or reinstall the Mail and Calendar apps, as well as reinstall Cortana. For more details, follow the suggestions given below.

Option 1 – Restart Cortana’s process in the Task Manager

Restarting Cortana’s process in the Task Manager could also help you resolve the problem. Refer to the steps given below to do so.

Tap the Ctrl + Alt + Del keys to open the Security options window.
From there, look for the Task Manager in the given list and open it.
Next, look for the process of Cortana and right-click on it, and then select the End Task option to end its process.
After that, the Cortana process will restart by itself and re-initialize.

Option 2 – Run the Windows Store App troubleshooter

The Windows 10 Store Apps Troubleshooter will help you in fixing the Web Preview problem in Cortana. This is a great built-in tool from Microsoft that helps users fix any app issues. To use the Windows Store Apps Troubleshooter, follow the steps below.

Tap Win + I keys again to open the Windows Settings panel.
Go to Update & Security and then go to Troubleshoot.
Under the Troubleshoot section, on your left-hand side, scroll down to find Window Store Apps.
Then click on the Run the troubleshooter option and follow the on-screen instructions and then see if it fixes the problem.

Option 3 – Try to relink your Microsoft Account

You might also want to relink your account in Microsoft using the Windows 10 Settings app.

Open the Windows 10 Settings app.
Next, navigate to Accounts > Email & Accounts and from there, go to the section of Accounts used by Email, Calendar, and Contacts.
After that, select your email account and select Manage.
Once done, a new panel will come up where you have to click on the “Delete account from this device” link.
Once you get a confirmation, select Delete and then relink the same account. This should resolve the problem.

Option 4 – Try to reinstall or update the Mail and Calendar apps

Open Windows PowerShell as admin.
Next, execute this command: Get-AppxPackage *windowscommunicationsapps* | Remove-AppxPackage
Once done, restart your computer and go to the Microsoft Store page to get the latest updates for both Windows Mail and Calendar apps.

Option 5 – Try to reset Cortana via Settings

Launch the Windows 10 Settings app and go to Apps > Apps & Features.
Next, look for the entry of Cortana on the right-side panel and select it.
After that, select the Advanced options and then select the Terminate button under the Terminate section.
Once done, click on the Reset button under the Reset section.
Restart your PC.
After your computer boots, launch Cortana again and check.

Option 6 – Try to reinstall Cortana

If none of the options given above works, you must consider reinstalling Cortana.

First, right-click on the Taskbar and select the Task Manager.
Next, select File menu > Run new task and type “Powershell” in the field and then select the “Create this task with administrative privileges” option.
Click on OK to open the PowerShell console.
After that, type the following command and hit Enter to execute it:

Get-AppXPackage -Name Microsoft.Windows.Cortana | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml"}

Restart your computer and check if the problem is now fixed.

Chrome does not save passwords

Recently, a number of users reported that their Google Chrome browser does not remember any accounts, login sessions, as well as passwords. So if you are one of the users who experience the same problem, then you’ve come to the right place as this post will guide you on what you can do your Chrome browser does not save passwords, remember accounts and login sessions in Windows 10. This issue in Chrome could be caused by a lot of factors. It is possible that there is a setting in Chrome that prevents the browser from saving any data. It is also possible that the Google Chrome profile or the Cache folder for Chrome has become corrupted. Moreover, a third-party antivirus program could also be blocking the browser’s functionality in saving data. Whatever the cause is here are some suggestions you could follow that will help you fix the problem but before you do that, you can try to update your Chrome browser to its latest version first. If it didn’t work, then proceed to the given options below.

Option 1 – Try to clear browser cache

Open your Google Chrome browser.
After that, tap the Ctrl + H keys. Doing so will open a new panel that allows you to delete the browsing history and other data in your browser.
Now select every checkbox that you see and click on the Clear data button.
Then restart your Chrome browser and check if you can now complete the download again.

Option 2 – Try to delete the cache files for Google Chrome

The next thing you can do is to delete Chrome’s cache files or its store information which helps it in loading cached webpages faster when you pull them up. However, if it turns out that the cache files are corrupted, then it’s no wonder why Chrome is unable to save passwords. To fix this, you can try to delete the cache files for Google Chrome webpages and you can do it by following these steps:

First, open Google Chrome.
Next, open this address in Chrome – chrome://settings/clearBrowserData
After that, go to the Advanced tab and select all time as well as the first four options.
Now click on the Clear data option and then restart the Chrome browser once the cache has been cleared.

Option 3 – Try allowing Google Chrome to keep local data

If the option to keep local data is disabled in Google Chrome’s settings, it won’t be able to store local data in the browser. Thus, you need to enable it by following these steps:

Open Chrome and enter this address – chrome://settings/clearBrowserData
After that, drag the toggle button off for the “Keep local data only until you quit your browser” option.
Once done, restart Google Chrome and check it fixed the problem or not.

Option 4 – Try to enable the setting that offers to save password

As you know, a lot of websites offers users a choice to save a password and you can also do the same with the Chrome browser. You just have to enable this particular setting by going to the address, chrome://settings/passwords. From there, drag the toggle button for the setting Offer to save passwords, off.

Option 5 – Try to create a new profile for Chrome

If your user profile in Google Chrome ends up getting corrupted, it is most likely the reason why Chrome is unable to save passwords. Thus, you need to create a new user profile. How? Follow the steps below.

First, click on the account icon located at the top-right corner of the profile.
Next, go to the Manage People section and select Add Person > Add.
After that, enter the details to add the new account and then restart Chrome.

Option 6 – Reset Chrome

Resetting Chrome can also help you fix the problem. This means that you will be restoring its default settings, disabling all the extensions, add-ons and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

Open Google Chrome, then tap the Alt + F keys.
After that, click on Settings.
Next, scroll down until you see the Advanced option, once you see it, click on it.
After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
Now restart Google Chrome.

Option 7 – Try to clean reinstall Chrome

Hit the Win + R keys to open the Run dialog box.
Next, type “%LOCALAPPDATA%GoogleChromeUser Data” in the field and hit Enter to open the User Data folder.
From there, rename the default folder and name it something else, e.g. “Default.old”.
After that, install Google Chrome again and check if the issue is now fixed.

How to Fix Error Code 0x8024002e

Error Code 0x8024002e - What is it?

Windows 10 error code 0x8024002e is related to the Windows update service. When you see the error code displayed on your screen, it means that the Windows update service has been blocked or not working. As a result of this error code, your computer might lag and the system may freeze while performing normal operations. The error may read as follows:

“There were some problems installing updates, but we’ll try again later. If you keep seeing this and want to search the web or contact support for information this may help: (0x8024002e)”.

Common symptoms include:

Slow computer performance
System freezes while performing normal operations or freezes while multitasking
BSOD error is showing
Some unwanted files get opened automatically
Updating is not possible

Solution

Error Causes

This error code appears because of the following reasons:

Incomplete installation of the Windows operating system
Incorrect registry entry
Corrupt or damaged system files
The computer has come under a virus attack
Miscommunication between the computer and the Windows Automatic Update service

The decline in RAM or outdated Hard Disk Drive

Further Information and Manual Repair

Method 1:

Remove any external media connected to the computer
Crash reboot your PC 2 to 3 times.
Now check if you are still having the problem.

If the problem still persists, try the following methods if you are able to boot to the desktop and check for the problem.

Method 2:

Changing Windows Update property to automatic: You might see this error if your Windows update property is set to manual. Follow the steps below to change it to automatic. Open Task Manager.

Click on the Services tab. Find “Open Services” at the bottom of the window.
A new window will pop up. Scroll down and find “Windows Update” from the list. Double click on the Windows Update. It will open its properties.
Select Automatic for ‘Startup Type.’ Click Apply, Start, and OK.

Now, try the Windows Update and check if you are still getting the error message. If the problem isn’t resolved, reboot your PC for the changes to take effect and then try again.

Method 3:

Disable Antivirus program: If you have any antivirus installed on your PC, you might need to disable it first and see if that helps. Although, most of the antivirus makers have made changes to work smoothly with Windows 10, it is a new Operating System and some antivirus may cause conflict. Disable the antivirus and check for updates to see if it is preventing you from updating your system and displaying the error code 0x8024002e.

Method 4:

Run inbuilt Windows update troubleshooter. Follow the steps given below:

Press Windows + W keys on your keyboard to enable the search option.
In the Search box type Troubleshooting.
Click on View all
Click on Windows update and follow the prompts to run the troubleshooter.

If the issue persists, try Method 5

Method 5:

Run the System File Checker tool (sfc.exe):

Open Command prompt.
Type sfc /scannow and hit Enter.
The sfc /scannow will scan all protected system files and replace corrupted files with a cached copy that is located in a compressed folder at %WinDir%System32dllcache. The %WinDir% has the Windows Operating System folder. For example, C:\Windows.

Do not close the Command prompt window until the verification is 100% complete. The command prompt will show the scan results when it is done. After it is done, you may receive one of the following messages:

“Windows Resource Protection did not find any integrity violations.” This means you do not have any missing or damaged system files.

OR you may receive a message saying:

“Windows Resource Protection could not perform the requested operation.”

To resolve this problem, run the System File Checker in safe mode and make sure that the PendingDeletes and PendingRenames folders exist under %WinDir%WinSxSTemp.

OR you may also receive a message saying, “Windows Resource Protection found corrupt files and successfully repaired them. Details are included in the CBS.Log%WinDir%LogsCBSCBS.log.” OR you may receive a message saying, “Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log%WinDir%LogsCBSCBS.log.”

Power Calibration Error or Medium Speed Error when burning CD/DVD

If you are one of the few users who is still burning CDs and DVDs, you might have come across an error that says, “Medium Speed Error” or “Power Calibration Error”. There are several factors that could cause this error but it’s most likely that the CD/DVD burner wasn’t able to determine the Optimum Power Calibration rate properly. So what is Optimum Power Calibration rate? It is a test that runs before the burning process to regulate the optimal laser power needed to complete the job. And if this process malfunctions, obviously, you won’t be able to burn the content on your CD or DVD. There are also cases when the Power Calibration error pops up for some small issues that have nothing to do with the regulation of laser power. Here are some quick fixes you can try to resolve the Power Calibration error when burning a CD or DVD.

Option 1 – Make sure you’re using good quality CD or DVD

A lot of burning issues stem down to the purchase of low CDs or DVDs to make sure that what you are using has good quality for it is not always a good idea to purchase cheap products as cheap products could also mean cheap quality.

Option 2 – Try burning at lower speeds

If you’re certain the problem is not with the CD or DVD you are using then you can try burning again, this time at lower speeds. There are instances when doing things quickly can end in a disaster such as the “Medium Speed Error” or “Power Calibration Error” you’re getting. To fix the problem, you have to burn at a slower speed and just take the time to wait until the burning process is done.

Option 3 – Try updating your burning software

It’s always a good idea to check if the burning software you’re using requires an update especially if it’s throwing up “Medium Speed Error” or “Power Calibration Error”. Thus, you need to update your burning software right away and then try to burn your CD or DVD once the update has been completed.

Option 4 – Try cleaning the disk drive

You might want to consider cleaning the disk drive using several tools in the market that is designed to clean the disk drive. These tools work on removing dust particles from the lens which helps a lot in the burning quality. Aside from that, it also helps in reducing errors like “Medium Speed Error” or “Power Calibration Error”. So give this option a try as it might time for a disk drive cleanup.

Option 5 – Try to disable the IMAPI

If none of the options given above worked, you might want to disable the IMAPI or Image Mastering Applications Programming Interface. How? Refer to the steps below.

Open Control Panel by simply clicking the Start button and then typing “control panel” in the field.
Control Panel should pop up in the search results. Once you found it, click it to open it.
Next, select System Security > Administrative Tools and then click Services.
After that, you’ll have to search for the “IMAPI CD-Burning COM Service” option.
Then right-click on it and select Properties.
From there, switch the Startup Type from “Enabled” to “Disabled”.
Now click on Apply and then restart your PC.

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