Guide to Fixing PFN_LIST_CORRUPT Blue Screen

Error Code 0xc004f034 – What is it?

Error code 0xc004f034 occurs when Windows users are unable to activate their operating system. It affects Windows 8 and Windows 10 users and features common symptoms which include the following:

• Inability to activate Windows
• Message box with error code 0xc004f034

Solution

Error Causes

Error code 0xc004f034 often occurs due to an issue with the Windows product key. This may occur when users enter an invalid product key or use one that is appropriate for use on a different version of Windows. To correct the issue, users will need to use the correct product key for their system or contact an IT professional if their device is connected to a Key Management Service (KMS).  Windows users affected by this error code may also need to check their system for viruses or missing system files since these issues can result in error codes on Windows devices.

Further Information and Manual Repair

Manual repair methods enable users to fix problems related to error codes. Though some manual repair methods require the use of Command Prompt and utility tools like the System File Checker, even non-technical Windows users can find success simply by following the instructions provided below.

However, note that some issues can be complex, thus requiring the use of an automated tool or help from a Windows repair technician. Consider these options if the manual repair methods below do not resolve error code 0xc004f034 on your Windows 8 device.

Method One: Enter Valid Windows Product Key

Microsoft currently offers several ways for customers to activate their Windows operating system, the most common of which is the product key. This 25-character code verifies that users have access to an authorized version of Windows.

You may get a valid product key from an authorized dealer, a new PC with Windows, or access a digital copy from a Windows website when you purchase your Windows operating system online. Once you have a valid product key, use it to activate Windows and resolve error code 0xc004f034 in Windows 8. Follow the steps below to access the Product Activation Wizard.

• Step one: Click or tab Start button then select Settings
• Step two: Tap or click PC Settings, then select Activate Windows
• Step three: Type invalid product key

Once a valid product key is used, the Product Activation Wizard should complete the activation process. If you are unable to complete the process, however, and error code 0xc004f034 remains unresolved, click the link or instructions the Product Activation Wizard provides regarding activation via phone or customer support.

Method Two: Run System File Checker

Another option available to Windows 8 users is System File Checker (SFC). This tool enables Windows users to scan and repair corrupted or missing system files. Follow the steps below to access SFC.

• Step one: Go to Start and type Command Prompt or CMD.
• Step two: Run as Administrator
• Step three: Type sfc /scannow ensuring a space is between “sfc” and “/scannow”.

System File Checker will repair any corruptions found on system files within your machine once you successfully follow the instructions provided. The tool will also replace missing files which will lead to better performance on your PC.

When the process is complete, restart your device then check if you are able to activate Windows. If error code 0xc004f034 is still present, you will need to find another solution via repair method three.

Method Three: Scan for Viruses and other Malware

Viruses and other forms of malware are one of the main issues resulting in poor PC performance and Windows error codes. To fix this issue on your PC, scan your machine for signs of these malicious programs. If you do not have anti-malware software and would like to download one from the Internet, ensure the software you choose is effective before attempting to download it.

Once you have powerful antimalware software on your PC, begin a scan for viruses, Trojan horses, and other forms of malware. If the Windows error code occurred due to issues related to malicious programs, you will be able to resolve the issue. If, however, this manual repair method proves ineffective in resolving error code 0xc004f034, download a powerful automated tool or contact a Windows repair technician to assist you.

Method Four: Use an Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 8 and other related issues when they do arise, download and install a powerful automated tool.

Building your skill set could be a very important thing, especially in today’s world, and what’s the best way other than online learning classes. You are not exposing yourself to pandemics, staying safe in the warmth of your home and most of the courses are free. Presented here are sites that I believe will and can help you with your goal of learning desired material whatever that might be. Sites are listed in no particular order with a description of what each has to offer.

Coursera

https://www.coursera.org/ Coursera was one of the pioneers when it comes to college education online. When it started all courses were free and offered certificates if the taker has done tasks with a passing grade. Today not everything is free but still, there are tons of free courses that can help you to learn something new and to advance in your work or hobby. Google is using the Coursera platform to deliver its courses to the audience and besides google a lot of academic professors from Princeton, Stanford, John Hopkins and many more are presently offering their course material.

edX

https://www.edx.org/ edX has evolved from MITx, MIT’s free initiative to place some free academic lectures from its classrooms free into the world. Since it was rebranded into edX it started including other big university names like Berkeley, University of Texas System, Harvard, and many more. Since its infant days, edX has expanded and included many areas that it offers coursework from arts to science. Certificated today are mostly not free but course videos are, so if you care to learn and not wave certificates around this is a great place to do it.

Udemy

https://www.udemy.com/ Udemy has a little different approach to course material than previously mentioned websites. Teachers on Udemy are mostly people that are working in a given field. Programmers will teach programming, fitness instructors will teach training, etc. There are vas variety of topics even on lifestyle, hobbies even gaming to more serious ones like software developing hardware, etc. There are free courses but mostly are one-time purchases with unlimited access to course material and with frequent discounts udemy might be a good place to look if you can find anything interesting.

Alison

https://alison.com/ Alison is kind of Udemy if we are talking about course material and who is teaching, the difference however is that it has more free content and it is one of the rare websites on this list that has Language courses. Courses vary from beginner level to more advanced ones.

Udacity

https://www.udacity.com/ Udacity was also one of the earlier websites to offer free courses, in today’s world it still has free material but there is also paying one. The big difference from other competitors is that Udacity focuses mostly on programming, data science, and web development and it is very strong in this field. There are no courses about art. Music or similar, mostly IT stuff is covered here. If this is something that interests you, make a free account and give it a go.

Codecademy

https://www.codecademy.com/ Codecademy is a website mainly focused on teaching you how to code. Pro plan is there but there are a lot of basic and free courses on the mentioned subject. The curriculum is really wide covering Python, R, Java, JavaScript, SQL, Ruby, C#, C++, Swift, PHP, HTML, CSS and more so I am sure that if you are interested in coding this would be a pretty good place to find things. Besides pure language coding courses site offers also, Cybersecurity, Web design, Data science, web development, Game Development, Mobile Development, and many more courses on provided subjects.

Academic Earth

https://academicearth.org/ Academic Earth has been built with one simple premise: Everyone deserves access to education. Lead by this kind of mindset on Academic Earth you will find well, academic courses similar to ones found on edX and Coursera, but from mentioned sites here all courses are free and you will find only academic ones, there are no entrepreneur or expert courses here, just pure academic ones. If you wish to see and learn something the way it is taught in Harvard, Berkeley, MIT, etc this is the place for you.

Khan Academy

https://www.khanacademy.org/ Khan academy is completely free and it is offering courses matching certain grades for children. It is offering courses for all 8 years of elementary school, math courses for high school and college with some coursework on topics like science, arts & humanities, reading, life skills, etc. Despite not being on the same level as some university courses presented on other mentioned websites Khan Academy is a good place to learn a lot of basic skills that you could build upon later.

Conclusion

I hope that I have helped you in some way to expand your skill set and learn something new with provided sources and I hope to see you again on errortools.com

When it comes to computer peripherals first thing that comes to people's minds is probably Mouse and Keyboard. Also when discussing peripherals brands, Razer is not a stranger and over the years it has built its name and cult following. Razer’s mechanical keyboards have been always in the upper field of quality and trust from users and Huntsman is no different.

Tech specifics of Huntsman keyboard

1. Mechanical optical switches Razer has introduced their new optical technology switch with this keyboard. These switches are faster and more accurate than typical mechanical switches and if tests are to be believed this is the fastest keyboard currently on the market.
2. Multi-functional digital dial A multi-function digital dial with three tactile media keys gives you instant access to everything from brightness to volume in seconds. All programmable and customizable through Synapse 3, so you can set your preferred configurations right at your fingertips.
3. 10-key rollover Anti-ghosting technology that enables 10-key simultaneous presses at the same time
4. 4-side underglow with Razer chroma Go crazy and personalize lighting effects any way you want with a full 4-side underglow and 38 customization zones. Powered by Razer Chroma

Feel and noise

In the department of noise, well it is the mechanical keyboard so naturally, it will be louder than membrane ones but in terms of comparing it to other mechanical keyboards it is within the same noise range, maybe just a tiny bit silenced. The keyboard comes with 2 different types of switches, purple clicky ones that are louder and have that *click* sound for sound feedback, and red ones, that are not equipped with clicky sound but are linear providing slightly faster performance. If you choose the Huntsman elite model of the keyboard it will come with a nice hand resting mat that is very comfortable and feels right. Using a keyboard feels like using a Razer keyboard, it is responsive and gives that superior mechanical feeling.

Conclusion

Razer Huntsman mechanical keyboard is not the cheapest nor the best on the market but it is the fastest one out. It is in the top tier of keyboards and worth the investment.

RadioRage is a potentially unwanted application developed by Mindspark Inc. This browser add-on is compatible with Mozilla Firefox, Internet Explorer and Google Chrome and claims to enhance the Internet browsing experience by allowing users to listen to their favorite music via the installed toolbar.

RadioRage Toolbar is categorized as adware since it infiltrates computers and after successful installation, this browser extension redirects browsers to home.tb.ask.com. And changes your default search engine to myway.com.

While active on your computer RadioRage collects user information such as browsing data, website clicks, and sometimes even sensitive user information, that it later sells / forwards to its ad distributors.

About Browser Hijackers

Browser hijacking is regarded as the internet’s constant risk that targets web browsers. It’s a type of malicious software that modifies your internet browser’s settings so that you are redirected to websites or pages that you had no intention of checking out. They are made to interfere with browser programs for many different reasons. These are typically used to force visitors to a specific website, manipulating web traffic to generate ad revenue. Most people assume that the browser hijacker is just a harmless website but that is not the case. Nearly all browser hijackers pose an actual threat to your online safety and it is necessary to classify them under privacy dangers. In a much worst case, your browser can be hijacked to download malicious software that will do a great deal of damage to your PC.

Key signs that your web browser has been hijacked

The typical signs that signify having this malicious software on your computer are: 1. your web browser’s home page is suddenly different 2. you get re-directed to internet sites you never intended to visit 3. The default search page of the browser is modified 4. you see multiple toolbars on the web browser 5. you might notice many pop-up ads on your screen 6. web pages load slowly and sometimes incomplete 7. you cannot go to specific sites such as home pages of security software.

So how does a browser hijacker infect a PC

There are many ways your computer could become infected with a browser hijacker. They typically arrive by way of spam email, via file-sharing websites, or by a drive-by download. They may also be deployed through the installation of a web browser toolbar, add-on, or extension. Some internet browser hijackers spread in user’s computers by using a deceptive software distribution method known as “bundling” (often through freeware and shareware). Well-known examples of browser hijackers include Conduit, CoolWebSearch, Coupon Server, OneWebSearch, RocketTab, Searchult.com, Snap.do, and Delta Search. Browser hijackers might record user keystrokes to collect potentially valuable information leading to privacy concerns, cause instability on systems, drastically disrupt the user experience, and finally slow down the computer to a point where it becomes unusable.

Browser hijacker removal methods

One thing you can try to eliminate a browser hijacker is to locate the malware within the “Add or Remove Programs” list of the Windows Control Panel. It might or might not be there. When it is, try to uninstall it. But, the majority of hijackers are really tenacious and require specialized tools to get rid of them. Inexperienced PC users should never attempt the manual form of removal, as it demands detailed system knowledge to carry out repairs on the computer registry and HOSTS file.

What To Do If You Cannot Install Any Anti-virus?

Every malware is detrimental and the effects of the damage will vary based on the specific kind of malware. Some malware is meant to restrict or prevent things that you wish to do on your computer system. It may well not permit you to download anything from the internet or it will prevent you from accessing a few or all websites, especially the anti-virus sites. So what should you do if malware keeps you from downloading or installing Anti-Malware? Refer to the instructions below to eliminate malware through alternate methods.

Use Safe Mode to resolve the issue

If the malware is set to run at Windows start-up, then booting in Safe Mode should avoid it. Only the bare minimum required applications and services are loaded when you boot your computer or laptop into Safe Mode. Listed below are the steps you need to follow to eliminate viruses in Safemode. 1) At power on, hit the F8 key before the Windows splash screen begins to load. This will bring up the Advanced Boot Options menu. 2) Select Safe Mode with Networking with arrow keys and press ENTER. 3) As soon as this mode loads, you will have an internet connection. Now, get the malware removal software you want by utilizing the browser. To install the application, follow the guidelines in the installation wizard. 4) As soon as the software is installed, allow the scan run to eliminate viruses and other threats automatically.

Switch over to some other web browser

Certain viruses might target vulnerabilities of a particular browser that block the downloading process. When you suspect that your Internet Explorer happens to be hijacked by malware or otherwise compromised by online hackers, the ideal plan of action is to switch over to a different web browser such as Firefox, Chrome, or Safari to download your favorite computer security application – Safebytes Anti-Malware.

Run anti-malware from a pen drive

Another approach is to download and transfer an antivirus program from a clean PC to run a virus scan on the infected system. Follow these steps to employ a flash drive to fix your infected system. 1) Make use of another virus-free computer system to download Safebytes Anti-Malware. 2) Insert the pen drive onto the same computer. 3) Run the setup program by double-clicking the executable file of the downloaded software, with a .exe file format. 4) Select the USB flash drive as the destination for saving the file. Follow activation instructions. 5) Now, transfer the flash drive to the infected computer. 6) Double click the Safebytes Anti-malware icon on the pen drive to run the software. 7) Hit the “Scan” button to run a full computer scan and remove viruses automatically.

Let's Talk About SafeBytes Security Suite!

These days, anti-malware software can protect your laptop or computer from various forms of online threats. But wait, how to select the right one amongst several malware protection software that’s available in the market? Perhaps you might be aware, there are many anti-malware companies and tools for you to consider. Some are really worth your money, but many aren’t. When looking for anti-malware software, purchase one which gives solid, efficient, and complete protection against all known computer viruses and malware. One of the recommended software programs is SafeBytes AntiMalware. SafeBytes carries a really good reputation for top-quality service, and clients seem to be very happy with it. SafeBytes anti-malware is a highly effective and user-friendly protection tool that is designed for end-users of all levels of computer literacy. This application could easily detect, remove, and protect your personal computer from the most advanced malware attacks including spyware, adware, trojan horses, ransomware, PUPs, worms, parasites as well as other possibly damaging software programs. There are numerous amazing features you’ll get with this particular security product. Listed below are a few of the great ones: Real-time Protection: SafeBytes gives you round-the-clock protection for your computer limiting malware intrusions in real-time. It’ll continuously monitor your laptop or computer for hacker activity and also gives end-users sophisticated firewall protection. Antimalware Protection: Built upon a greatly acclaimed antivirus engine, this malware removal application is able to find and remove several obstinate malware threats such as browser hijackers, PUPs, and ransomware that other common anti-virus applications will miss. Web protection: SafeBytes checks and gives a unique safety ranking to every site you visit and block access to webpages considered to be phishing sites, thus protecting you from identity theft, or known to contain malicious software. Light-weight: This application is not “heavy” on the computer’s resources, so you’ll not find any performance problems when SafeBytes is working in the background. 24/7 On-line Tech Support: Support service is accessible 24 x 7 x 365 days via email and chats to answer your questions.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove RadioRage 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 RadioRage

What is the Runtime Error R6025?

The runtime error R6025 can be quite annoying for PC users as it pops up randomly anytime. It is a type of runtime error but typically associated with C++ programming. The error is displayed in the following format:

‘Runtime Error! Program: C:…R6025-Pure Virtual Function Call’

Solution

Error Causes

The runtime error R6025 is triggered due to the following reasons:

• Runtime components of Visual C++ libraries are missing
• Microsoft.NET framework damaged
• Registry corrupted with bad files and data overload
• Virus and malware invasion

Further Information and Manual Repair

Try the solutions given below to repair the runtime error R6025 on your system:

Cause: Microsoft.NET framework damaged

Solution: If this is the underlying cause of the error, then it is advisable to reinstall and repair the Microsoft.NET framework on your PC. To reinstall this framework, go to the start menu, click control panel, programs and then click ‘Turn Windows features on or off’. Here you might be promoted for an administrator password. Insert the password to proceed. Now locate Microsoft.NET framework 3.5.1 and uncheck this box, press OK and then reboot your system. After that open ‘Turn Windows features on or off’ and check the Microsoft.NET framework 3.5.1 and then restart your PC. This will hopefully resolve the error.

Cause: Runtime components of Visual C++ libraries are missing

Solution: If runtime components of Visual C++ libraries are missing, then you will have to download and install these from different websites. This can be time-consuming and slightly complicated for you if you are not technically sound.

Cause: Malware Attack

Solution: If the runtime error R6025 is triggered due to a malware attack, then you will have to install and run a powerful antivirus on your PC. This will help detect and remove such malicious software affecting your system.

Cause: Registry Issues

Solution: If registry corruption is the underlying cause of the runtime error R6025 on your PC, then you need to clean up the registry and repair it. The best way to clean and repair the registry is to download Restoro. Restoro is an advanced PC repair tool integrated with powerful and highly functional utilities all in one. Utilities include a registry cleaner and a system optimizer. It has easy navigation, a user-friendly interface, and is compatible with all Windows versions. Users of all levels can operate it to resolve all kinds of PC errors including the runtime error R6025. The registry cleaner utility wipes out all the unnecessary, malicious, obsolete files and invalid entries overloading the RAM. It frees up the disk space, repairs the damaged files and the registry. Furthermore, Restoro also functions as a system optimizer. It detects system instability issues and resolves them while boosting the speed of your PC. To resolve the runtime Error R6025 on your system in seconds click here to download Restoro PC repair tool now!

Error Code 1007 - What is it?

This is a typical system error.  This error means the requested operation cannot be performed in full-screen mode. It hampers your ability to run your desired program on Windows PC. It is displayed on computer screens in the following format:

"ERROR_FULLSCREEN_MODE" and/or as the hexadecimal value 0x3EF.”

Solution

Error Causes

The system error code 1007 can be triggered due to several reasons. This includes but is not limited to:

• Windows registry damage or corruption
• Device driver conflicts
• Spyware or viral infection
• Hardware malfunction
• Software file damage or corruption

Unlike the blue screen of death error codes, this error is not fatal. But it may hamper your ability to run and work on your desired program. To avoid the inconvenience, it is advisable to fix it immediately.

Further Information and Manual Repair

Try these easy and effective do it yourself methods to repair the system error code 1007 on your PC:

Method 1 - Scan Your System for Viruses

If the underlying cause of error 1007 on your system is viral and spyware infection, then it is advisable to download a powerful antivirus and scan your entire PC. An antivirus not only detects but also removes all types of viruses including spyware, Trojans and adware. Once removed, try running your desired program again, if the program runs successfully, this means the error is resolved.

Method 2 - Update the Drivers

When the error code 1007 occurs due to driver conflict, then it is advisable to update the drivers. To do so simply use the driver update wizard from within Device Manager. The wizard will guide you through the entire driver update process, making it extremely simple for you to update the drivers in minutes.

Method 3 - Clean and Repair the Registry

You may experience the error 1077 because of registry damage or corruption. If this is the reason, then it is suggested you download Restoro. This is a user-friendly and multi-functional PC Fixer deployed with a powerful registry cleaner. It scans your entire system for registry related errors and issues, removes all unnecessary and obsolete files like cookies, junk files and bad registry entries, notorious for registry corruption. In addition to this, it also repairs the registry and damaged system files, thereby resolving the system error code 1007 immediately. Click here to download Restoro on your PC and fix system error code 1007 today!

As you know, Windows PowerShell is a useful command-line utility in Windows 10 that can be used to manage the Local Users and Groups which affirms the multiuser operating system principle of Windows 10. Although there are other GUI-based utilities used to manage the Local Users and Groups, there are some system administrators that would still like to use the command-line utility to manage these Local Users and Groups. So in this post, you will be guided on how exactly you can manage the Local Users and Groups using PowerShell on your Windows 10 computer. To get started, refer to the options provided below to manage both the Local Users and Groups using Windows PowerShell.

Option 1 – Manage the Local Users via Windows PowerShell

• You need to first open Windows PowerShell as an admin. To do that, just tap the Win + X keys and select the Windows PowerShell (Admin) option.
• After opening PowerShell, you need to execute the “Get-LocalUser” cmdlet so that you can find all the details about all the local user accounts in your computer which would include the Account Name, Enabled status, as well as description.

Note: On the other hand, you can also get the customized data about several objects that are related to your account. For instance, if you want to check when was the last time the Local account’s password was set, then you need to execute the “Get-LocalUser -Name root | Select-Object PasswordLastSet” cmdlet. Thus, the structure for this cmdlet is “Get-LocalUser -Name root | Select-Object *”. Here are the objects you can use to get different sorts of data:

• AccountExpires
• Description
• Enabled : True
• FullName
• PasswordChangeableDate
• PasswordExpires
• UserMayChangePassword
• PasswordRequired
• PasswordLastSet
• LastLogon
• Name
• SID
• PrincipalSource
• ObjectClass

Option 2 – Manage the Local User Groups using Windows PowerShell

• Like what you did earlier, open Windows PowerShell as admin and then execute the “Get-LocalGroup” cmdlet so you can get all the information about all the groups of all the local user accounts.
• Now if you want to create a new Local User Group, just execute the “New-LocalGroup -Name <NAME OF THE GROUP> -Description '<ENTER THE DESCRIPTION OF THE GROUP HERE>'” cmdlet.
• And if you want to add Local User Accounts to a specific group, just execute the “Add-LocalGroupMember -Group '<NAME OF THE GROUP' -Member ('NAME 1','NAME 2','<ROLE>') -Verbose” cmdlet. You could also use the “Get-Localuser -Name john | Add-LocalGroupMember -Group '<NAME OF THE GROUP>'” cmdlet for the same purpose.
• If you want to display all the User Accounts of a specific group, just use the “Get-LocalGroupMember –Group ‘ ’” cmdlet.
• Now if you want to remove a local user account from a group, all you have to do is use the “Remove-LocalGroupMember -Group '<NAME OF THE GROUP>' –Member <NAME OF THE LOCAL USER ACCOUNT>” cmdlet.

As you know, one of the most popular browsers these days is the Google Chrome browser. Browsing the web every day using your Chrome browser, leaves a trail of browsing history. Google uses the browser history to streamline and make the browsing experience a lot better. But there are times when Chrome users experience trouble in deleting their web browsing history, data, cookies, and cache. In this post, you will be guided through specific settings that will help you in getting rid of the browsing history in Chrome. There are several options you can take in clearing the browsing history in Chrome. But before you try them, you can try the basic one first using the following steps:

• First, click on the three-dotted icon and click on History from the menu.
• Next, click on the Clear browsing data option and select “All time”.
• Then select the type of history you want to delete.
• After that, click on the Clear Data button.

If clearing the browsing history in Chrome the old way didn’t work, then you can try to check out the options provided below.

Option 1 – Clear the cache using the File Explorer

The first thing you can do is to clear the cache by using File Explorer. To get started, refer to these steps:

• Tap the Win + E keys to open File Explorer.
• Next, navigate to the following paths:
  • C:/Users/YOURUSERNAME/AppData/Local/GoogleChrome/User Data/DEFAULT/Cache
  • C:/Users/YOURUSERNAME/AppData/Local/GoogleChrome/User Data/PROFILENAMECache
• From the given locations above, replace “YOUR USERNAME” with the user profile name you use and then search for a file named “Cookies”.
• Now delete its contents.

Option 2 – 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.

Option 3 – 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.

While browsing the internet, if you suddenly encounter a warning with an error message saying, “Server certificate has been revoked ERR CERT REVOKED” then it indicates that the SSL certificate used by the website has been revoked by its issuer. This kind of problem can only be fixed by the website owner but that does not mean that you can’t do anything about it. In fact, you have the option to bypass this error as well as contact the certificate issuer – all this and more. Just a reminder, if a website that accepts payment, its passwords don’t have SSL or has some certification issue, you should never trust it. For instance, if you are trying to purchase something online and you’re on the payment stage but you encounter the “Server certificate has been revoked ERR CERT REVOKED” error, you must not proceed. To resolve the “Server certificate has been revoked ERR CERT REVOKED” error, here are some things you can do.

Option 1 – Try contacting the Certificate Issuer

If you are the website owner, of course, the best thing you can is to get in touch with the Certificate Issuer in order to resolve the problem.

Option 2 – Try fixing the Date and Time

You have to check your computer’s Date and Time. There are cases when this simple setting causes a connection problem. So if your computer Date and Time is set to date or time that this after the certificate expiration date, then you have to make sure that you set it to automatically configure time. To do so, just open Settings > Time and Language. From there, turn on the toggle for “Set time automatically” and “Set time zone automatically” options. After that, check if it fixes the error, if not, you need to check if the manual selection is correctly set or not.

Option 3 – Bypass the Certificate Revocation Check

As pointed out earlier, you have the option to bypass the Certificate Revocation check. All you have to do is follow the steps below.

• In the search box of your browser, type “internet options” and open it once it appears.
• After that, go to the Advanced tab and navigate to the Security subheading.
• Next, uncheck the “Check for publisher’s certificate revocation” option as well as the “Check for server certificate revocation” option.
• Now restart your computer. Upon the next startup, try opening the website again. This time, your browser will stop checking it for certificate issues. However, it’s not safe to leave those options unchecked so make sure that once the website’s SSL certificate is fixed or once you no longer have to visit that website, you recheck those options.

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.