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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.

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3 Methods To Fix Qtcore4.dll Error

Qtcore4.dll Error - What is it?

Qtcore4.dll is a dynamic link library file that helps Microsoft Windows in loading several key components of the system. The Qtcore4.dll error occurs when the Qtcore4.dll file cannot be loaded to run the application supported by this .dll file. The Qcore4.dll missing error message may occur while booting your system or launching a certain program. It is a blue screen of death error type. The Qtcore4.dll error code is often displayed as:

BLUE SCREEN ERROR - QtCore4.dll Not Found

Filei386QtCore4.dll could not be loaded. The error code is 7. Setup cannot continue. Press any key to exit.

Solution

Restoro box imageError Causes

This error code is triggered by a variety of reasons such as:
  • Windows file allocation file gets damaged
  • Your computer BIOS (Basic Input/Output System) are misconfigured
  • The Qtcore4.dll file gets corrupt
  • Registry gets damaged and corrupt
  • Non-Microsoft program not running in tandem with Windows
  • Malware attack
  • Improper hardware driver software
It is advisable to fix the Qtcore4.dll error code immediately as this error can pose serious threats to your system. Qtcore4.dll error can lead to system breakdown.

Further Information and Manual Repair

Here are some ways of fixing the Qtcore4.dll error on your system:

1. Re-install the Program Causing Qtcore4.dll error message to pop up

As dll files are shared files sometimes due to program deletion and installation .dll file settings can get misconfigured, damaged, and corrupt. In such a scenario, you can try reinstalling the program that is causing Qtcore4.dll error message to appear on the screen.

2. Reconfigure your Mis-configured BIOS

If BIOS misconfiguration is the cause of this error code on your system, then try reconfiguring your system’s misconfigured BIOS.
  • To do this boot the computer and then press the BIOS designated keys to enter the BIOS. The keys may vary from manufacture to manufacture but typically, the setup keys are F2, F10, F12, and Del.
  • Once you figure out the setup keys, press them rapidly when booting the computer.
  • After successfully hitting the setup keys, the BIOS will load and you will see the BIOS setting menu on your screen. Adjust settings. Go to SATA Operation and change RAID AHCI to RAID ATA. Save changes and then exit.

3. Scan Your PC with a Registry Cleaner and an Antivirus

However, after adjusting the BIOS if the error still pops up on your screen, then this indicates the problem is bigger than you think. It triggers either malware attack or registry corruption. If these are the underlying causes for the Qtcore4.dll error on your system then you need to scan your PC with a registry cleaner and an antivirus. Registry is the main database of your system; if this gets corrupt it is most likely to result in system failure and valuable data loss. And as for malware, the biggest concern is data security threats. Today’s advanced and lethal malware like viruses and spyware can give easy access to hackers to enter your system from a remote location, browse through your confidential and private data and manipulate it to their advantage. This has led to a surge in various types of cyber crime, data breaches, and identity theft cases over the years. To avoid all this while resolving the error code Qtcore4.dll on your PC, registry cleaning and repair and antivirus scan are needed. You can either download 2 separate tools on your system to scan your PC which by the way will take a lot of time and increase your chances of the system slow down or you can download Restoro.

Why Restoro?

  • Total System Care is an advanced, user-friendly, high, and multi-functional repair.
  • It is deployed with a powerful and intuitive registry cleaner. It also functions as a system optimizer. It spares you from downloading numerous tools to address and resolve different errors on your PC.
  • It is your one-stop solution for not only Qtcore4.dll problems but practically all PC-related issues.
  • The registry cleaner utility detects all the malicious, unnecessary, and obsolete files overloading and corrupting your RAM.
  • This includes junk and temporary files. It wipes them out thus clearing your disk space. Simultaneously, it also repairs the damaged and misconfigured dll files including the Qtcore4.dll file, and fixes the corrupt registry.
  • The privacy error utility has the properties of an antivirus. It detects and removes malware, viruses adware, and spyware from your system in seconds.
  • Total System Care resolves the Qtcore4.dll error on your system and boosts the performance of your system. It has a simple and neat interface which makes it quite easy for users to operate it, even those who are not technically adept.
  • It is compatible with all Windows versions
Click here to download Restoro and repair the Qtcore4.dll error on your PC.
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Keyboard folder shortcut in Windows 11
If you are visiting a single folder many times during the day it might be beneficial to place its shortcut on the desktop for easy access. But did you know that you can also set a keyboard shortcut for that same folder shortcut making it available simply by clicking desired key combination? keyboard shortcutIn order to make a keyboard shortcut for the desired folder know that it is available only when you have a shortcut of the desired folder, it cannot be done on the folder itself, only on its shortcut. Now folder shortcut does not need to reside on desktop, you can place it anywhere you like, but it must be a shortcut. So the first step is of course to make a shortcut of the folder that you wish to have access via keyboard key combination and place it where you wish. Once you have done this step, right-click on it and choose properties. Inside properties at the top click on the Shortcut tab and then inside Shortcut Key, press the key combination that you wish to associate with this folder. Confirm with OK and start using fast folder access with your desired key combination.
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Fix Office Activation error 0x80070426
In case you don’t know, Microsoft Office uses a separate mechanism than the Windows operating system for specific purposes such as Updates and Activation which brings in the content dependencies of this mechanism on different services and processes. Thus, in such cases, you could encounter errors like the error code 0x80070426. When you get this error, you will see the following error message on your screen:
“An unexpected error has occurred. Your request cannot be processed at this time. Please try again later. (0x80070426)”
This kind of error is caused by various supporting processes and services that are not working or are not being triggered as they were supposed to. If you are currently facing this issue, worry not for this post will guide you in fixing it. There are two potential fixes you can try – you can either check the responsible services or manually run the Activation Script. For more details refer to the given options below.

Option 1 – Try checking the responsible Services

  • In the Start search, type “services.msc” in the field and tap Enter or click OK to open the Windows Services Manager.
  • If a User Account Control or UAC prompt appears, just click on Yes to proceed to the Windows Services Manager utility window.
  • After that, look for the “Software Licensing Service” service entry from the given list of services inside the window.
  • Then right-click on it and select Properties and from there, make sure that its Startup Type is set to Automatic.
  • Once done, click on the Start button to start the service and then exit the Services Manager.
  • Next, tap the Win + R keys to open the Run utility and then type “cmd” in the field and tap Enter to open an elevated Command Prompt.
  • After that, type and enter each command below one after the other.
    • net start slsvc
    • sc qc slsvc
    • sc queryex slsvc
    • sc qprivs slsvc
    • sc qsidtype slsvc
    • sc sdshow slsvc
  • Now check if the problem is fixed or not.

Option 2 – Try to manually run the Activation Script

  • In the Start search, type “cmd” and right-click on Command Prompt from the given search results and then select the “Run as administrator” option to open Command Prompt with admin privileges.
  • Next, navigate to the following location inside the Command Prompt command-line utility if you are using Office 16.
    • x86: C:/Program Files (x86)/Microsoft Office/Office16
    • x64: C:/Program Files/Microsoft Office/Office16
  • On the other hand, if you are using an older version, go to the following location instead.
    • x86: C:/Program Files (x86)/Microsoft Office/OfficeXX
    • x64: C:/Program Files/Microsoft Office/OfficeXX
  • Once you’re in the location, type the following command to run the Activation Script and then tap Enter.
cscript ospp.vbs/act
  • The command you just entered will activate your copy of Microsoft Office.
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Fix Windows Activation Error 0x80070005
Windows uses 2 types of keys for its activation, KMS or MAK. These keys should work without any issues since they are elevated with higher permissions but in some cases, they are by accident run without their proper permission, and then we have access denied error or error 0x80070005 To resolve this issue please first check if not by any chance your antivirus or firewall is preventing slmgr.bs file to access the right permissions, that being said if the previous solution is not working note that you have to be an administrator of the system or have administrator privileges. As an administrator, you will have to use Software Licencing Management Tool or short SLMGR.VBS, a VBS file in Windows used for its activation purposes. As an administrator, open Command prompt with admin permissions and then run slmgr.vbs This will make sure that activation goes through, make sure to use proper options like:
/ipk <ProductKey> or /ato [<Activation ID>]
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How to get rid of Chedot

Chedot is a Chromium-based Browser that replaces your default System Internet Browser. This browser offers users tools for downloading videos, faster browsing, and custom searches. From the publisher: A feature of our browser is a high speed on slow computers, high speed download on a poor internet, support resuming file download when connection is broken and the download in multiple threads, the ability to go on blocked websites and downloading videos from video sites.

While this may seem interesting and good at start, this browser has been marked as a Potentially Unwanted Program. It monitors user activity, collects web traffic data, and user information. While using Chedot you may see additional ads throughout your browsing sessions.

About Potentially Unwanted Applications

Exactly what is a Potentially Unwanted Program (PUP)?

People have encountered it – you download a free software, you then discover some unwanted applications on your computer system or discover a strange toolbar has been included with your browser. You didn’t have them installed, so how did they appear? These unwanted applications, which are called Potentially Unwanted Programs, or PUP in short, usually tag along as a software bundle when downloading the application and could cause serious problems for computer users. PUP does not involve malware in the traditional sense. What normally makes a PUP different from malicious software is the fact that when you download one, you’re doing it with your consent – although in most cases unintentionally and reluctantly. But, there is no doubt that PUPs remain bad news for computer users as it can be incredibly damaging to the PC in many ways.

How do unwanted programs affect you?

Unwanted programs come in many forms. More commonly, they will be found in adware bundlers which are known to utilize aggressive and misleading advertising. The majority of bundlers install many adware applications from a number of vendors, each of which features its own EULA policy. Safebytes Anti-malware completely removes this threat and safeguards your PC against PUP or malware infection. PUPS also appear in the form of undesirable toolbars or internet browser plug-ins. Not just they needlessly use up space on your screen, toolbars can also manipulate search results, track your web browsing activities, decrease your internet browser’s performance, and slow down your web connection to a crawl. They could seem harmless but PUPs are generally spyware. They may include dialers, keyloggers, and also other software built inside them that could monitor you or send out your sensitive information to 3rd parties. Because of this unwanted program, your application may freeze, your security protections can get disabled that could leave your computer susceptible, your system could get ruined, and this list goes on and on.

Tips for preventing PUPs

• Study cautiously prior to agreeing to the license agreement as it could have a clause about PUPs. • Always opt for the custom if you are given an option between Recommended and Custom Installations – never click Next, Next, Next thoughtlessly. • Install an advert blocker/pop-up blocker; Deploy anti-malware products such as Safebytes Anti-malware. These software programs will establish a wall between the computer and online criminals. • Be alert when you download and install freeware, open-source software, or shareware. Avoid downloading and installing browser extensions and applications you are not knowledgeable about. • Always download software from reliable sources like official sites as opposed to untrustworthy sharing space. Avoid torrents and peer-to-peer clients.

What To Do If You Cannot Download Safebytes Anti-Malware?

All malware is bad, but certain types of malware do much more damage to your PC than others. Some malware sits in between your computer and the net connection and blocks some or all internet sites that you really want to check out. It will also block you from installing anything on your PC, especially anti-malware applications. So what to do when malicious software keeps you from downloading or installing Safebytes Anti-Malware? Although this type of issue will be tougher to get around, there are some actions you can take.

Install the antivirus in Safe Mode

In Safe Mode, you can adjust Windows settings, un-install or install some software, and get rid of hard-to-delete viruses. In the event the virus is set to load immediately when PC starts, shifting into this mode may well prevent it from doing so. In order to get into Safe Mode or Safe Mode with Networking, press the F8 key while the PC is booting up or run MSConfig and look for the “Safe Boot” options under the “Boot” tab. Once you’re in Safe Mode, you can try to install your antivirus program without the hindrance of the virus. Now, you can run the anti-malware scan to eliminate computer viruses and malware without any hindrance from another malicious application.

Download the antivirus software using a different browser

Some viruses might target vulnerabilities of a specific browser that block the downloading process. If you suspect that your Internet Explorer happens to be hijacked by a virus or otherwise compromised by cybercriminals, the best approach is to switch over to an alternate web browser like Chrome, Firefox, or Safari to download your chosen security software – Safebytes Anti-Malware.

Make a bootable USB anti-virus drive

Here’s another solution which is creating a portable USB anti-virus software that can scan your system for malware without the need for installation. Follow these steps to run the anti-virus on the affected PC. 1) Download Safebytes Anti-Malware or Windows Defender Offline onto a clean computer. 2) Plug the USB drive into the uninfected PC. 3) Double-click on the downloaded file to open the installation wizard. 4) Choose the drive letter of the flash drive as the place when the wizard asks you exactly where you would like to install the anti-virus. Follow the on-screen instructions to complete the installation process. 5) Now, transfer the pen drive to the infected PC. 6) Double-click the EXE file to run the Safebytes tool from the flash drive. 7) Press the “Scan Now” button to start the virus scan.

SafeBytes Anti-Malware - More Protection For You

These days, an anti-malware tool can protect the computer from different forms of online threats. But wait, how to choose the right one amongst various malware protection software that is available on the market? Perhaps you might be aware, there are lots of anti-malware companies and products for you to consider. Some of them are good, some are decent, while some will affect your computer themselves! You must be careful not to pick the wrong product, especially if you purchase premium software. When it comes to commercial anti-malware software options, many people opt for popular brands, like SafeBytes, and they are very happy with it. Safebytes is among the well-established computer solutions firms, which provide this all-inclusive anti-malware software. Using its cutting edge technology, this application can help you eradicate multiples types of malware which includes computer viruses, worms, PUPs, trojans, adware, ransomware and browser hijackers. SafeBytes has outstanding features when compared with various other anti-malware programs. Below are a few of the great ones: Real-time Protection: Malware programs aiming to enter the computer are discovered and stopped as and when detected by the SafeBytes active protection shields. It’ll examine your computer system for suspicious activity regularly and shields your personal computer from unauthorized access. Optimum AntiMalware Protection: Safebytes is built on the best virus engine within the industry. These engines can find and remove threats even during the initial stages of a malware outbreak. “Fast Scan” Features: SafeBytes’s high speed malware scanning engine lessens scan times and extends battery life. Simultaneously, it’ll effectively identify and remove infected files or any online threat. Web Filtering: SafeBytes provides instant safety rating to the webpages you are about to check out, automatically blocking harmful sites and to ensure that you’re certain of your online safety while browsing the internet. Lightweight: SafeBytes is really a lightweight tool. It use up an extremely small amount of processing power as it operates in the background therefore you will not observe any system performance difficulties. Premium Support: For any technical concerns or product support, you can obtain 24/7 professional assistance via chat and e-mail.

Technical Details and Manual Removal (Advanced Users)

If you don’t wish to use malware removal software and prefer to get rid of Chedot manually, you could possibly do so by going to the Windows Add/Remove Programs menu in the Control Panel and deleting the offending program; in cases of browser extensions, you may uninstall it by visiting the browsers Add-on/Extension manager. It’s also highly recommended to factory reset your browser to its default state to fix corrupt settings. To make sure of complete removal, find the following registry entries on your computer and delete it or reset the values accordingly. Please keep in mind that only advanced users should try to manually edit the system files mainly because deleting any single critical registry entry results in a major problem or even a system crash. Furthermore, certain malware keeps replicating which makes it tough to get rid of. You’re encouraged to do this procedure in Safe Mode.
Files: %APPDATA%\Microsoft\Windows\Start Menu\Programs\Chedot %PROGRAMFILES%\Chedot %USERPROFILE%\Documents\chedot.reg Registry: HKEY_LOCAL_MACHINE\ HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\App Paths\chedot.exe HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run value: Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run value: Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\RegisteredApplications value: Chedot.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\Software\Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.htm\OpenWithProgIds value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.html\OpenWithProgIds value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.xhtml\OpenWithProgIds value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\Chedot.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\chedot.exe HKEY_LOCAL_MACHINE\SOFTWARE\RegisteredApplications value: Chedot.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.html\OpenWithProgids value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.htm\OpenWithProgids value: ChedotHTML.NSJA6BHDA3NCFCFMXW3QSCUYUQ HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Chedot HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MediaPlayer\ShimInclusionList\chedot.exe HKEY_LOCAL_MACHINE\Software\Chedot\Microsoft\Windows\CurrentVersion\Uninstall..Uninstaller Chedot
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Microsoft Office Windows 11 edition
Microsoft has officially announced details about the newest upgrades to its office 365 suite moving forward along with its new OS release. It seems that Microsoft has listened to its user base and feedback since Word, Excel, and PowerPoint are getting much-needed redesign taking into account many suggestions from the community. The new office should feel more like an application suite guiding focus on the interconnection of applications themselves providing users with a much more natural experience of using them.

The new office features so far

From Microsoft themselves:
“This Office visual refresh is based on feedback from customers who asked for a more natural and consistent experience within and between your applications, specifically on Windows. With this update, we deliver an intuitive, coherent, and familiar user interface, using the Fluent Design principles, across all your applications: Word, Excel, PowerPoint, OneNote, Outlook, Access, Project, Publisher, and Visio. We aligned this visual refresh with the design of Windows 11 to provide seamless experiences on your PC.”
It is always refreshing to hear when a company listens to its user base and actually does what is needed instead of trying to invent the wheel.

office appsHow to switch

Since beta is already rolling and if you have an active 365 subscription to office suite visual refresh will be automatically available to all Office insiders running beta channel builds. It can be turned on and off using the coming soon feature in the top right corner of the menu in any application. Just click on the megaphone icon to open the coming soon pane and apply settings to all office apps. Note that The Coming Soon feature is not available in Access, Project, Publisher, or Visio. If you turn on the visual refresh in any of the 4 apps mentioned above (Work Excel, PowerPoint, or OneNote), it will also be available in these 4 apps.

Difference themselves

The Home tab menu still has a familiar look with a few tweaks. For example, accessing frequently used Word commands will be a lot easier. By navigating to Designer > Show Quick Access Toolbar, users can add a customizable shortcut ribbon to Word that houses conveniently placed options. Also, the office will not match your Windows operating system color theme so if you have a dark theme enabled, the office will also have a dark color theme. Color palettes are more neutral, corners are a bit softer but customizable ribbons are a win here for me.

office dark modeConclusion

There was not much said other than visual upgrades and small tweaks that were supposed to make your life easier but then again Windows 11 itself is in the same boat. I am not sure if this is a great update offering just some visual tweaks and focus on workflow mechanics or just being plain lazy and trying to cash in visuals as a completely new product.
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Fix Windows Update error 0x80096004
Recently, a lot of users reported to Microsoft about getting an error code 0x80096004 while trying to update their Windows 10 computers. This kind of Windows Update error occurs during the initial download and verification process. It also affects the Windows features (FODs) and when you encounter this error, you will also see this error code, “TRUST_E_CERT_SIGNATURE”. This error code indicates that the signature of the certificate could not be confirmed. This is caused by a broken certificate store or a corrupt copy of the Windows operating system is installed. Here’s the complete error message:
“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: (0x80096004).”
To fix Windows Update error 0x80096004, you can check out the options provided below.

Option 1 – Delete the contents in the Software Distribution folder and Catroot2 folder

  • Open the WinX Menu.
  • From there, open Command Prompt as admin.
  • Then type in the following command – don’t forget to hit Enter right after typing each one of them.
net stop wuauserv net start cryptSvc net start bits net start msiserver
  • After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
  • Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
After resetting the SoftwareDistribution folder, you need to reset the Catroot2 folder to restart the services you just stopped. To do that, follow these steps:
  • Type each one of the following commands.
net start wuauserv net start cryptSvc net start bits net start msiserver
  • After that, exit Command Prompt and restart your computer, and then try to run Windows Update once more.

Option 2 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter is one of the things you can first check out as it is known to automatically resolve any Windows Update errors like error code 0x80096004. To run it, Refer to these steps:
  • Tap the Win + I keys to open Settings.
  • From there, click Update and Security and go to the Troubleshoot section.
  • Next, select Windows Update and click the “Run the troubleshooter” button and wait until it’s finished, and then try to run Windows Update again.

Option 3 – Try to temporarily disable anti-virus and Windows Defender Firewall

As mentioned, the error could be due to the antivirus program or the Windows Defender Firewall installed on your computer. Thus, disabling them or any security software installed in your computer is always a good idea you can try when you’re not able to access the shared drive on your computer. There are times when you encounter problems like Error Code 0x80096004 due to interference of antivirus or security programs. Thus, you have to disable both your antivirus program and Windows Defender Firewall for the meantime and check if it fixes the error or not.

Option 4 – Try to replace the DLL file with a trusted source

You can also try to replace the crypt32.dll file as it could help in fixing the Windows Update error. Just make sure that you get one from a trusted source.
  • First, you need to get the new DLL file from another computer with preferably the same file version number.
  • After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
    • x86: This PC > C:/Windows/System32
    • x64: This PC > C:/Windows/SysWOW64
  • Next, type “cmd” in the Cortana search box and right-click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
  • Now type the “regsvr32 crypt32.dll” command and hit Enter.
  • Restart your PC and check if the error is now fixed.

Option 5 – Try downloading and installing the Windows Updates manually

Error Code 0x80096004 might be due to a Windows Update that has failed. So if it is not a feature update and only a cumulative update, you can download the Windows Update and install it manually. But first, you need to find out which update has failed, and to do so, refer to the following steps:
  • Go to Settings and from there go to Update and Security > View Update History.
  • Next, check which particular update has failed. Note that Updates that have failed to install will be displayed under the Status column which has a label of “Failed”.
  • After that, go to the Microsoft Download Center and look for that update using its KB number and once you find it, download and then install it manually.
Note: You can also use the Microsoft Update Catalog, a service from Microsoft that provides a list of software updates that can be distributed over a corporate network. With the help of this service, it can be easier for you to find Microsoft software updates, drivers as well as fixes.

Option 6– Run System File Checker or SFC scan

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files. To run the SFC command, follow the steps given below.
  • Tap Win + R 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 PC.

Option 7 – Try to run the Windows Update Service in a Clean Boot State

There are some instances that some conflicting programs installed in your computer might be the one that’s causing Windows Update error. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.
  • 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” check box 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” check box.
  • 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.)
  • Now try to run the Windows Update Service again and see if Windows Update error 0x80096004 is now gone.
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PDF text disappears when editing or saving
If you are trying to save a file in a PDF format on your Windows 10 computer but then the PDF text content in an Adobe file suddenly disappears, then read on. This post will give you more insight into this issue. This kind of issue is rare and mostly occurs in forms that you can fill upon. In such a case, the text you enter in the form vanishes right after you click the Save button. One of the benefits of working with PDF files is that it has the ability to compress high-quality files to relatively small file sizes. This is really useful especially when you are saving hard drive space and you’re working with limited storage resources. However, these files can contain layered content if they are created from layered documents using applications like Adobe InDesign. Consequently, a single page of the PDF file can contain different layers with different content. So if you try to save or print a PDF file that contains layered content, the elements will disappear from the PDF. To resolve this issue, you can try to merge or flatten the file since it will help keep the changes in the PDF file. On the other hand, you can no longer make any alterations or form data once you flatten the file. Another thing to keep in mind is that merging or flattening the file can’t be undone so you might want to save another copy of the file before you proceed.

Option 1 – Print to PDF

  • First, you have to open the desired PDF file and tap the Ctrl + P keys to open the Print dialog box.
  • After that, select the “Microsoft Print to PDF” option as the printer.
  • Once the action is confirmed, it will regenerate another version of the PDF file with the default settings and merge all the existing layers into a single layer.
  • On the other hand, you can also click on the “File” menu of the PDF file and select Print.
  • From there, click on the Print button and select “PostScript (*.ps)” as the “Save as” type to save a PostScript copy of the original PDF file.
  • Once you’re done, double click on the .ps file to open the file in the Adobe Distiller which will flatten the file automatically and convert it to a PDF file with only one visible layer.

Option 2 – Save the PDF file as an Optimized PDF file

If you are using the Acrobat Reader Pro version such as the Acrobat Pro, Foxit, and so on, you can try to flatten the layers by saving the PDF file as an Optimized PDF file. Refer to these steps to do so:
  • Select File > Save as > Optimized PDF.
  • Next, select the Transparency checkbox from the Settings window that opens.
  • Then click on the Save button to apply and save the changes made. After that, the PDF text content should not disappear when you try to save a file on your Windows 10 computer.
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How to Fix Error Code 0x80070057
The Error Code 0x80070057 is rather typical with Win7. Customers of Win7 maintain reporting that each moment they strive to install this Operating system, it shows this problem error. Often, the total information that comes with this specific error is:
"Error Code 0x80070057: The parameter is wrong"
When this problem happens, you will end up struggling to move private documents from one person to another.

Solution

Restoro box imageError Causes

You could get the error message when you attempt installing Win7,
"An Internal Error has occurred. Incorrect parameters".
If this happens to you, realize that you are dealing with malfunction code 0x80070057. This error occurs mostly when you are trying to build a full backup of your Windows 7 OS.

The primary source of Error 0x80070057 is huge registry values.

Extensive registry values usually occur when you are trying to back up your Windows 7 OS. This means that you need to immediately create a bigger virtual memory space to avert the occurrence of the error.

Error Code 0x80070057 can be a result of incompatibility between the motherboard and some drivers.

Check whether the computer's motherboard and the installed drivers are compatible. If you can't do this effectively on your own, it might be a good idea to enlist the services of a qualified technician.

The Problem Signal 0x80070057 has a close Connection with RAID Installations

RAID installations have a tendency of sparking off the Error Code 0x80070057. If you experience this error while using RAID, first turn off the RAID setup and check whether that resolves the problem.

Further Information and Manual Repair

Error Code 0x80070057 is repairable. Thus, there's absolutely no cause for alarm when you see it with respect to your own Windows 7 Operating System. So what can you do to resolve it? a) Increase Virtual Memory: This is perhaps the most common solution to Error Code 0x80070057. In most cases, simply raising the virtual memory especially on Windows 7 Operating-System completely eliminates the error. Moreover, you don't have to be technically advanced to effect the change. Simply follow these steps:-
  • Click the Start Button and visit Control Panel
  • Click System Security, and proceed to System.
  • Click the Advanced System Settings, subsequently proceed to the Advanced Level Tab.
  • Click Change, which can be under the Virtual Memory
  • Change the virtual memory value. For instance, you can customize entirely from 2000MB to 6000MB.
  • Click Set, then Ok. You are done
As with each additional change you make with respect to your Computer, you will have to conclude by re-booting it. This way you make certain that they'll stay as you've established them and apply the necessary modifications. If the error still persists after attempting the preceding fix, download a registry-cleaning software. The software will clean up your disk and free up memory thus increasing the available virtual memory for your computer. This should solve your persistent Error Code 0x80070057.
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How to Repair Windows 10 Upgrade Error Code 0x80070070 – 0x50011

Code 0x80070070 – 0x50011 – What is it?

If you’ve recently tried installing Windows 10, you might have encountered error code 0x80070070 – 0x50011 or its alternatives (error code 0x80070070 – 0x50012 and 0x80070070 – 0x60000). Whatever formats this error code presents itself in, it's usually accompanied by a barrage of other errors, as underscored on Microsoft’s official site. If you’ve encountered this error code, it simply means that your computer system might not have the required or required space to install the upgrade.

Likely, if you’ve experienced error code 0x80070070 – 0x50011, it’ll likely appear in the formats highlighted below:

  • 0x80070070 – 0x50011
  • 0x80070070 – 0x50012
  • 0x80070070 – 0x60000

Solution

Restoro box imageError Causes

At present, this Windows 10 upgrade error is triggered or caused by various factors:

  • Lack of computer resources or space
  • Virus/malware infestation
  • A clogged registry

Further Information and Manual Repair

Whilst new, not much information has been propagated regarding this error. However, there are some manual / practical steps you can take to have your Windows 10 upgrade up and running. Since the primary aspect of solving this problem is to make space on your computer system, here are some ways in which you can do so manually.

Method 1: Get more space

  • Check the current space on your computer  

Before making attempts to create space on your computer, it’s vital that you check to decipher how much free space you have available.

  • Make use of Disk Clean-up 

Since there’s a free service available on your computer to create space, why not use it and save time? If the Disk Cleanup tool is employed regularly, this will free up hard drive space and optimize your computer to work better.

  • Remove unwanted desktop apps 

There are several apps lying around on your computer that you simply don’t use, uninstall those and make space to elude error code 0x80070070 – 0x50011 or its alternatives (Code 0x80070070 – 0x50012, Code 0x80070070 – 0x60000)

  • Remove or archive files  

If you have lots of photos, media, documents (files), videos, etc, that you don’t use or will only need in the future, try cloud storage. You’ll still have those files within your possession but just not in a physical location. However, they’re still accessible. Another suggestion: If you use programs such as One Drive or Google Drive for desktop, limit your use to only the online application.

  • Add more storage

If you’re not able to implement the above steps to clear some space to accommodate your Windows 10 upgrade due to error code 0x80070070 – 0x50011, acquire more storage. This can be expanded by incorporating storage devices such as USB flash drives, CDs, cloud storage, and SD Cards.

Method 2: Scan your computer for virus/malware

If you regularly download stuff, especially software on the Internet from ‘not so secured’ sites, you might have picked up something. You might have downloaded malware or virus (along with other legit programs).

To resolve this issue, it’s advised and very important that you download a powerful antivirus and perform a complete scan of your computer system. After you’ve detected and removed the suspected malware/virus, you’ll then be able to eliminate error code 0x80070070 – 0x50011 and resume with your Windows 10 upgrade.

Method 3: Clean up your computer’s registry

If you do not clean your computer’s registry often, it could become congested or clogged by .XML files, junk files, and cookies. To resolve this problem, clean your registry by using a powerful and user-friendly tool to clean up the problem.

Click here to download Restoro.

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