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Fix Qualcomm Atheros Qca61x4a Driver Issue

Qualcomm Atheros Qca61x4a Driver is a software driver used in WI FI communication between OS and device itself. When this driver stops working usually it means loss of connection and no internet available.

This error knows to comes frequently and repeat itself over long periods of time which makes it quite annoying. If you are one of the unlucky users of Windows who get this error please keep reading in order to eliminate it and continue working on your computer normally.

  1. Disable & Enable the Qualcomm Adapter Driver

    Press ⊞ WINDOWS + X to open the secret menu, click on the device manager.
    In device manager expand network adapters.
    Right-click on Qualcomm Atheros Qca61x4a wireless network adapter and click on disable
    Right-click on Qualcomm Atheros Qca61x4a wireless network adapter and click on enable

  2. Rollback the Qualcomm Adapter driver

    Press ⊞ WINDOWS + X to open the secret menu, click on the device manager.
    In device manager expand network adapters.
    Right-click on Qualcomm Atheros Qca61x4a wireless network adapter and click on properties
    Under properties, window click on Driver tab and left-click on Roll Back driver (if the option is greyed there is no previous driver, follow next step)
    Choose your reason and click on OK

  3. Update Qualcomm Atheros driver to the latest version

    Press ⊞ WINDOWS + X to open the secret menu, click on the device manager.
    In device manager expand network adapters.
    Right-click on Qualcomm Atheros Qca61x4a wireless network adapter and click on Update Driver

  4. Install the new driver in compatibility mode

    Right-click on the installer package and choose properties
    Go to the compatibility tab
    Choose compatibility settings and install.

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Fatal error occurred while trying to sysprep
There are several kinds of errors you could encounter when you are running Windows 10 on a virtual machine. The Windows OS knows the difference between booting up in a standalone computer or in a virtual machine. This is why some specific drivers and system capabilities are used while emulating the Windows OS on software and during this phase, there are times when the System Preparation may throw up an error that says, “A fatal error occurred while trying to sysprep the machine”. This kind of error arises due to a race condition wherein the Sysprep command tries to stop the Microsoft Distributed Transaction Coordinator or MSDTC service and the VMware tool tries to start the MSDTC service. You may also see the following messages logged in the Setuperr.log file:
  • [0x0f0082] SYSPRP LaunchDll:Failure occurred while executing ‘C:Windowssystem32msdtcprx.dll,SysPrepDtcCleanup’, returned error code -2146434815[gle=0x000000b7]
  • [0x0f0070] SYSPRP RunExternalDlls:An error occurred while running registry sysprep DLLs, halting sysprep execution. dwRet = -2146434815[gle=0x000000b7]
  • [0x0f00a8] SYSPRP WinMain:Hit failure while processing sysprep cleanup providers; hr = 0x80100101[gle=0x000000b7]
To fix the 0x0f0082, 0x0f0070, 0x0f00a8 Sysprep errors, you can check out two potential fixes. First, you have to check the status of the MSDTC service and the second one is to check the settings in the Windows Registry. Note that these fixes are proven to be effective on many users and apply to several versions of Windows, including Windows 10.

Option 1 – Check the status of the MSDTC service via Command Prompt

As mentioned, the error could be caused by the malfunctioning of the MSDTC service or it. Thus, you have to uninstall and reinstall the MSDTC service to resolve the problem and you can do that using Command Prompt. Follow the steps below.
  • In the Start Search, type “command prompt” and from the results, right-click on Command Prompt and then select the “Run as administrator” option to open it with admin privileges.
  • If a User Account Control or UAC prompt appears, just click on Yes to proceed.
  • Once you’ve opened Command Prompt, execute this command: msdtc –uninstall
  • The command you just entered will uninstall the MSDTC service. After that, you need to execute this second command to reinstall the service: msdtc –install
  • Now exit Command Prompt and check if the error is now fixed.

Option 2 – Check the Registry settings

  • Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and click OK or hit Enter to open the Registry Editor.
  • After opening the Registry Editor, navigate to this registry path: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionSoftwareProtectionPlatform
  • From there, look for a DWORD value that’s named “SkipRearm” and double click on it.
  • Then change its value data to “1”.
  • Restart your computer to apply successfully apply the changes made and check if it was able to fix the error.
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What to do if Google Drive Unable to Connect
As you know, the Google Drive service is a Backup and Synchronization service provided by Google. It was launched way back in April 2012 which provides users with the options to synchronize, store and share files by uploading them to Google’s servers where they stay until they are deleted personally by the users and can be accessed anywhere using the Google Account that’s used to upload them. Recently, a lot of users reported that they were unable to connect to Google Drive from their Windows 10 computers. This kind of problem has been noticed in the middle of the upload process and can be seen at times after the app launches. If you also experience the same issue, then you’ve come to the right place as this post will guide you in fixing it. There are a lot of possible reasons why this kind of problem occurs. It could be that the app was not able to launch properly or the internet got disconnected when the app was about to launch. It is also possible that the Firewall has blocked the app from connecting to the internet or that the antivirus program is preventing the app from making contact with its database. Aside from that, it is possible that the account you are using on your computer is preventing Google Drive from connecting to the internet due to some configuration errors. Follow the suggestions provided below to fix the connection issue with Google Drive.

Option 1 – Configure the Firewall

As mentioned, the Windows Firewall might be blocking the app from contacting its database so, in this option, you have to allow Google Drive through the Firewall. To do so, follow these steps:
  • In the Windows Start Search, type “firewall” and click on the “Allow an app or feature through Windows Firewall” option from the search results.
  • After that, you will see a list of apps, and here, click on the “Change Settings” button.
  • Next, scroll down and make sure to check both the “Public” and “Private” options for Google Drive.
  • Now click on Ok to save the changes made and then try to launch Google Drive again.

Option 2 – Try to launch Google Drive again

Google Drive might have not launched properly that’s why it can’t connect to its servers so you can try to launch it again and see if it helps.
  • Tap the Ctrl + Shift + Esc keys to open the Task Manager.
  • Next, go to the Processes tab and click on the “View” option located at the top.
  • After that, uncheck the “Group by Type” option and click on the “Google Drive Sync” from the list of processes.
  • Then click on the “End Task” option and close the Task Manager.
  • Launch Google Drive again and see if the issue is now resolved.

Option 3 – Temporarily disable third-party antivirus

Aside from Firewall, antivirus programs, especially the third party ones, are also known to block files applications the instant it detects a threat to the system. Thus, your antivirus program might be the reason why you can’t download anything on your Windows 10 computer. To fix this, you can try to disable the antivirus program on your computer in the meantime and then try to launch Google Drive again. Do not forget to enable them again as disabling them can leave your computer vulnerable to cyber threats.

Option 4 – Try to create a new account

There are times when a certain configuration for a user account might be blocking some elements of the Google Drive app. In such cases, you can try to create a new account to fix the problem.
  • Click on the Windows key and then click on the icon for Settings.
  • From there, click on the Accounts button and select the “Family & Other People” option from the left pane.
  • Next, click the “Add someone else to this PC” option.
  • After that, click on the “I don’t have this person’s sign-in information” option and select the “Add a user without a Microsoft Account” setting.
  • Type in the credentials for the new account you are creating and click on Next.
  • After the account is created, click on the account and then select the “Change account type” option.
  • Click on the drop-down menu and select the “Administrator” option and then click on OK.
  • Now sign out of the current account and sign in to the new one and then open Google Drive again.
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Webpage was blocked (ERR_BLOCKED_BY_CLIENT)
If you are browsing the web but suddenly encountered the ERR_BLOCKED_BY_CLIENT error on your Chrome browser in Windows 10, read on as this post will guide you in fixing this problem. This kind of error has already been reported by a number of Chrome users and it seems that the problem has something to do with a plugin or extension. Here’s the exact content of the error:
“This webpage was blocked by an extension (ERR_BLOCKED_BY_CLIENT)”
This kind of error, as pointed out, could be caused by an extension or plugin on Chrome that is blocking the web page. It is also possible that the version of Chrome is obsolete or that there could be more than 100 bookmarks in the Bookmark Manager. Before you troubleshoot the problem, make sure that you download the latest version of Google Chrome and see if it fixes the error. If it didn’t, then you can try opening a web page in Incognito Mode or disable and remove the extension that’s causing the problem. You could also try to remove any surplus bookmarks.

Option 1 – Try to open the web page in Incognito Mode

The first thing you can do to fix the problem is to try opening the web page in Incognito Mode. When your browser is in this mode, it will work without extensions. This would help in fixing the problem especially if it was caused by some extension or toolbar in your browser. All you have to do is open any web page in Chrome and tap the Ctrl + Shift + N key combination to open a window in Incognito Mode.

Option 2 – Try to disable and get rid of the problematic extension

After you’ve isolated the problem and have determined that an extension is the one that’s causing it, then the next thing you have to do is to disable or get rid of that extension.
  • Open Chrome and press Alt + F keys.
  • Go to More tools and click Extensions to look for any suspicious browser extensions or toolbars.
  • Click the Recycle bin and select Remove.
  • Restart Chrome and press Alt + F keys again.
  • Proceed to On Startup and mark Open a specific page or set of pages.
  • To check if the browser hijacker is still active, click Set pages, if it is active, overwrite the URL.
Note: If removing the browser extensions or toolbars didn’t work, you can also try to reset your Google Chrome browser.
  • 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 removing surplus bookmarks

If your Chrome browser is already supporting more than 100 bookmarks, you might want to consider deleting them as it could also be one of the reasons why you’re getting the ERR_BLOCKED_BY_CLIENT error. To remove these bookmarks, just open the bookmark library by typing this address “chrome://bookmarks/” in the address bar of Chrome and tap Enter and press Shift and then select the surplus bookmarks by using the arrow keys. After that, click Delete to get rid of them.

Option 4 – Try clearing browser data

There are times when some data in the browser is conflicting with the loading of the website and triggers errors like ERR_BLOCKED_BY_CLIENT. And so you can try to clear your browser’s data. This might be a very basic solution but oftentimes it works in fixing this kind of error in Google Chrome. Follow the steps below to clear the data in your browser.
  • Open your Google Chrome browser.
  • After that, tap the Ctrl + H keys. Doing so will open a new panel that allows you to delete the browsing history and other data in your browser.
  • Now select every checkbox that you see and click on the Clear browsing data button.
  • Then restart your Chrome browser and check if you can now open any website or not.
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A Guide to Fixing Error Code 80070490

Error Code 80070490 - What is it?

This error 80070490 code may occur when you try to update your PC either through the Microsoft Update website or with a Windows update. The error message is displayed in the following format:
Error 80070490 (Element not found)

Solution

Restoro box imageError Causes

Error Code 80070490 is triggered because of a couple of reasons. It indicates the file CBS Manifest that is needed to install Windows update is corrupt or damaged. CBS (Component Based Servicing) Manifest is the file that is used to help your computer recognize various components inside your PC. Another reason for error occurrence is registry corruption. If the registry that stores all the information and activities performed is not cleaned frequently, the obsolete files saved in the registry like the junk files, bad entries and cookies eventually accumulate and corrupt it thereby generating such error codes.

Further Information and Manual Repair

Here are some effective and proven methods that you can try by yourself to resolve error code 80070490 on your PC.

Method 1 - Use the System Update Readiness Tool

Download the System Update Readiness Tool from the Windows website and run it on your PC. This tool is designed to detect and scan for abnormalities and inconsistencies that could be preventing and causing problems during the system update. Once you have downloaded and scanned your PC, try to install the updates again. If the error still persists, try other methods illustrated below.

Method 2 - Repair Windows

Here are the steps that you need to follow to repair Windows:
  • First, close all programs and then reboot your PC. Insert the Windows DVD into the computer’s disk drive and wait for the setup to begin.
  • If for any reason, the setup doesn’t start automatically, then don’t worry simply click start, then type Drive: setup.exe in the search box. Please note, in the drive insert the letter of your computer’s DVD drive for example D:setup.exe.
  • Now in the programs list, click setup.exe  And then click install now.
  • After that click ‘go online to obtain the latest updates for installation’, if you are asked for the Windows Product Key, then simply type it to proceed.
  • In the ‘Which kind of Installation do you want?’ option, click Upgrade.
When the Windows installation is complete, restart your PC and then run Windows update.

Method 3 - Clean the Registry

If the cause of error code 80070490 on your PC is related to registry corruption, then it is advisable to download Restoro. This is an advanced and easy-to-use PC Repair Tool embedded with a registry cleaner. The registry cleaner scans your entire PC, removes all obsolete and unnecessary files corrupting the registry, and cleans it right away. Click here to download Restoro to repair error code 80070490
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Remove login screen in Windows 10
Each time we turn ON our computer or wake it from hibernation we are greeted with a Windows login screen where we need to provide login credentials in order to get into Windows itself and start working. This method of preserving data and privacy is perfectly fine and as a matter of fact, it is recommended for mobile computers but if you have a home computer in a safe environment where no one will try to look at your data or rummage through your personal stuff then removing login screen is safe enough action and can cause you a lot piece, from time-saving to less frustration on every restart or sleep action. In previous Windows versions, it was much easier to turn off this feature but it seems Microsoft has determined that our privacy and security are important and somewhat removed the ability to turn OFF the lock screen. In this guide, we will show you how you can still remove the lock screen and automatically log in with your account like in the good old days. The first thing you need to do is to press ⊞ WINDOWS + R  to bring up the Run dialog keyboard with windows and r markedIn the dialog, type in netplwiz and press ENTER. run dialog with netplwiz typed inYou will find yourself in the User Accounts window, inside deselect Users must enter a user name and password to use this computer. Press OK user accounts windowSign in the window will pop up where you will have to type in your password and confirm it in order to start the feature. automatically sign in dialogAfter typing in your password and confirming it, press OK. That's it, next time you wake your computer from hibernation or turn it ON, you will automatically be greeted with a desktop instead of a Windows login screen.
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How to Fix 0x8007043c Error Code

What is 0x8007043c Error Code?

Have you ever come across 0x8007043c error message pop up on your PC? If yes, then you should know that this error message is generated when any corresponding process or operation cannot be completed successfully by the application. This is a critical Windows OS Error message that should be fixed immediately.

Solution

Restoro box imageError Causes

The 0x8007043c error code is usually triggered by the following reasons:
  • Missing or corrupt registry files
  • Failure to update Windows Installer
  • Viruses and Spyware
Common signs of this error code are pop-up messages, program lock-ups, problems with opening documents, and screen freeze.

Further Information and Manual Repair

As soon as you experience this error on your PC, it is advisable to repair it immediately because this error poses high-security risks. Malwares and viruses are notorious for data theft. To fix the 0x8007043c error on your PC, you don’t need to take on the services of an IT professional. This error code is rated as easy to repair. By following the instruction and repair solutions given below, you can easily fix this Window error 0x8007043c in a couple of minutes by yourself. Here’s what you need to do:

Step 1: Scan for Viruses and Spyware

To stop hackers from sneaking into your PC and stealing your confidential data, you must first scan your computer for viruses and spyware on your PC. It is advisable to use a powerful antivirus to ensure your computer is totally virus and spyware clean.

Step 2: Download and Install a Registry Cleaner

After you scan for viruses, you should now download and install a registry cleaner. This is needed because an antivirus does not detect corrupt registry entries. To detect such entries, the registry cleaner tool is the best. After you download a registry cleaner on your system, click the scan button. You will have to wait for a few seconds for the scanning to finish. Once the scanning is complete, click on the ‘Repair’ button to fix the errors. After fixing all the errors, restart your computer. This is important because the registry changes will only come into effect after the system restarts. By following these 2 simple steps, you can easily resolve the 0x8007043c error on your system. However, to prevent this error from occurring again, it is recommended to run the antivirus every time you use your PC.
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How to remove ListenToTheRadioNow from your PC

ListenToTheRadioNow is a Browser Extension that allegedly lets you listen to radio from your browser. However, all this extension does is add links to the popular radio stations on your home page. This extension hijacks your home page and changes your default search provides to MyWay. While running it monitors browsing data from your browser, mining information such as website visits, clicked links, and sometimes even personal information. This information is later used to display targeted ads through your browser. Several anti-virus scanners have marked this extension as a possible Browser Hijackers, and due to its data mining nature, it is not recommended to keep it on your computer.

About Browser Hijackers

Browser hijacking is a type of unwanted software, commonly a browser add-on or extension, which then causes modifications in the web browser’s settings. Browser hijackers could do more than just modifying homepages. In most cases, browser hijacking is used for earning ad revenue that comes from forced advert clicks and website visits. Even though it may seem naive, all browser hijackers are dangerous and therefore always regarded as security threats. They don’t just ruin your internet browsers, but browser hijackers could also modify the system registry to make your PC susceptible to other malicious programs.

How you can know whether the browser is hijacked?

There are several symptoms of browser hijacking: 1. home-page is changed 2. new bookmarks pointing to porn websites have been added to your bookmarks 3. the default internet search engine and/or the default web browser settings are altered 4. find new toolbars that you did not add 5. unstoppable flurries of popup ads show up on your PC screen 6. webpages load very slowly and often incomplete 7. you have prohibited entry to certain web pages, for example, the site of an anti-malware software firm like SafeBytes.

So how does a browser hijacker infect a PC

A browser hijacker could be installed on your computer or laptop if you visit an infected website, click on an e-mail attachment, or download something from a file-sharing website. They also come from add-on programs, also referred to as browser helper objects (BHO), browser plug-ins or toolbars. Also, some shareware and freeware can put the hijacker inside your computer through “bundling”. A good example of some popular browser hijackers includes Babylon, Anyprotect, Conduit, SweetPage, DefaultTab, Delta Search, and RocketTab, but the names are regularly changing.

Tips on how to get rid of a browser hijacker

Some hijackers can be removed by uninstalling the freeware they were included with or by eliminating any extension you’ve recently added to your computer. However, most hijacking codes are not very easy to eliminate manually, since they go deeper into your operating system. Furthermore, manual removal expects you to perform several time-consuming and tricky actions that are hard to do for new computer users. Professionals always recommend users to get rid of any malicious software including browser hijacker with an automatic malware removal tool, which is simpler, safer, and faster than the manual removal technique. One of the top tools for correcting browser hijacker malware is SafeBytes Anti-Malware. It can help you eliminate any pre-existing malicious software in your computer and provides you real-time monitoring and protection from the latest internet threats. Employ a PC optimizer along with your anti-malware software to correct various registry problems, remove computer vulnerabilities, and improve your computer overall performance.

Help! Malware Preventing Antivirus Installation And Access To The Internet

All malware is bad, but certain kinds of malware do a lot more damage to your computer than others. Some malware sits in between the computer and the net connection and blocks some or all internet sites that you want to check out. It will also prevent you from installing anything on your system, especially anti-virus applications. If you’re reading this, chances are you’re stuck with a malware infection that is preventing you to download and install the Safebytes Anti-Malware program on your computer. Do as instructed below to get rid of the malware by alternate methods.

Install the anti-malware in Safe Mode

Safe Mode is actually a special, basic version of Windows in which just minimal services are loaded to counteract viruses and other troublesome programs from loading. In the event, the malicious software is set to load automatically when the computer boots, switching to this mode may well prevent it from doing so. To start the computer into Safe Mode, hit the “F8” key on your keyboard just before the Windows logo screen comes up; Or right after normal Windows boot up, run MSConfig, check Safe Boot under Boot tab, and click Apply. Once you’re in Safe Mode, you can attempt to download and install your antivirus software application without the hindrance of the virus. After installation, run the malware scanner to get rid of most standard infections.

Download the security program using an alternate web browser

Some malware mainly targets particular browsers. If this sounds like your case, use another web browser as it could circumvent the virus. If you appear to have a virus attached to Internet Explorer, then switch over to an alternate browser with built-in security features, such as Firefox or Chrome, to download your preferred anti-malware program – Safebytes.

Install and run anti-virus from the Thumb drive

Another solution is to store and operate an anti-malware program entirely from a Pen drive. Do these simple steps to clear up your affected PC using a portable antivirus. 1) Download the anti-malware on a virus-free PC. 2) Insert the USB drive onto the same system. 3) Run the setup program by double-clicking the executable file of the downloaded software, with a .exe file format. 4) Choose the drive letter of the pen drive as the place when the wizard asks you where you would like to install the antivirus. Follow the instructions on the computer screen to complete the installation process. 5) Unplug the pen drive. You may now utilize this portable anti-virus on the affected computer. 6) Double-click the EXE file to open the Safebytes software right from the pen drive. 7) Click the “Scan” button to run a full system scan and remove viruses automatically.

Protect Your PC and Privacy With SafeBytes Anti-Malware

To help protect your laptop or computer from many different internet-based threats, it’s important to install an anti-malware program on your laptop. However, with so many antimalware companies in the marketplace, nowadays it is hard to decide which one you should buy for your laptop. Some of them are great and some are scamware applications that pretend as genuine anti-malware software waiting to wreak havoc on your computer. While looking for an anti-malware tool, choose one that offers dependable, efficient, and complete protection against all known computer viruses and malware. On the list of recommended software by industry analysts is SafeBytes Anti-Malware, a popular security application for Windows computers. SafeBytes anti-malware is really a powerful, highly effective protection software made to assist users of all levels of computer literacy in finding and removing harmful threats from their computer. Through its cutting-edge technology, this software protects your computer against infections caused by different kinds of malware and similar threats, including spyware, adware, viruses, worms, trojans, keyloggers, ransomware, and potentially unwanted program (PUPs). SafeBytes anti-malware provides a myriad of advanced features that sets it apart from all others. Below are some of the great features included in the tool. Robust Anti-malware Protection: Built on a highly acclaimed anti-virus engine, this malware removal application can find and get rid of many obstinate malware threats like browser hijackers, PUPs, and ransomware that other common antivirus applications will miss. Live Protection: SafeBytes provides complete and real-time security for your computer. This software will continuously keep track of your computer for suspicious activity and updates itself continuously to keep current with the latest threats. Web Filtering: Through its unique safety rating, SafeBytes informs you whether a site is safe or not to visit it. This will make sure that you’re always certain of your safety when browsing the web. Faster Scanning: SafeBytes Anti-Malware possesses a multi-thread scan algorithm that works up to five times faster than any other antivirus software. Lightweight Application: SafeBytes gives you complete protection from online threats at a fraction of the CPU load due to its enhanced detection engine and algorithms. 24/7 Live Expert Support: You will get 24/7 technical support to promptly resolve any issue with your security application. SafeBytes can keep your PC safe from most advanced malware threats automatically, thus keeping your online experience secure and safe. Malware issues can become a thing of the past when you put this application to use. If you want sophisticated forms of protection features & threat detections, buying SafeBytes Anti-Malware will be worth the dollars!

Technical Details and Manual Removal (Advanced Users)

If you do not wish to use malware removal software and like to get rid of ListenToTheRadioNow manually, you might accomplish this by going to the Windows Add/Remove Programs menu in the control panel and deleting the offending software; in cases of web browser plug-ins, you could remove it by visiting the browser’s Add-on/Extension manager. You will likely also want to reset your web browser. Finally, check your hard drive for all of the following and clean your Windows registry manually to get rid of leftover application entries after uninstalls. Please keep in mind that only experienced users should attempt to manually edit the system files because removing any single critical registry entry results in a serious problem or even a system crash. In addition, certain malware is capable of replicating or preventing removal. It is highly recommended that you carry out the removal process in Safe Mode.
Files: %LOCALAPPDATA%\Google\Chrome\User Data\Default\Sync Extension Settings\mlpfmcjpkbijcpegdbkplcddgacjlgpf %UserProfile%\Local Settings\Application Data\Google\Chrome\User Data\Default\Sync Extension Settings\mlpfmcjpkbijcpegdbkplcddgacjlgpf %LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions\mlpfmcjpkbijcpegdbkplcddgacjlgpf %UserProfile%\Local Settings\Application Data\Google\Chrome\User Data\Default\Extensions\nhpggpakfcgbidnmlheodkbccemlenag %LOCALAPPDATA%\Google\Chrome\User Data\Default\Extensions\nhpggpakfcgbidnmlheodkbccemlenag %USERPROFILE%\AppData\Local\Google Registry: HKEY_LOCAL_MACHINE\Software\ListenToTheRadioNow\Microsoft\Windows\CurrentVersion\Uninstall..Uninstaller ListenToTheRadioNow
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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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New Microsoft Windows 11 store
When Microsoft held Windows 11 presentation it took special time to present the upcoming new Windows 11 store as kind of a big deal. It was openly stated that with new Windows we will get a new store with a different attitude and new look.

microsoft storeNew Microsoft store

Microsoft has stated that both customer and developer feedback over time has contributed to their redesign and rethinking of the store itself. They want to be sure that policies for developers are more straightforward and clear so more developers will decide to bring their product to Windows. As for customers, they want more safety and more security so they feel protected when making a purchase. The new store will come in Windows 11 but also in Windows 10 as well via update.

Stories and collections

Introducing the new store will be curated stories. Microsoft believes that stores should be focused on user experience so stories from customers themselves will play a big role here. They are rich editorial content to keep you informed about the best apps and inspire you to achieve more with your device. This approach to information is aimed at bringing unknown applications to users via presenting them in a professional manner. Android apps in the store As stated in Windows 11 unveiling and presentation, Android apps will work inside Windows 11. Microsoft has teamed up with Amazon to bring you Android apps directly inside Windows via the new Microsoft store.

Pop up store from within a browser

When you are surfing on a certain webpage and want to save and install the application from there, a new pop-up store window will show allowing you to install the app directly. Microsoft has not said will this feature work outside their Edge browser so we will have to wait and see about that.

Support for multiple types of applications

Since now developers were tied to certain formats if they wanted to publish their application in any kind of environment. Microsoft wants to bridge this. Windows developers can publish any kind of app, regardless of app framework and packaging technology – such as Win32, .NET, UWP, Xamarin, Electron, React Native, Java, and even Progressive Web Apps. For Progressive Web Apps Microsoft has made open-source tool PWABuilder 3.

Flexibility and choice of commerce platform

Starting July 28, app developers will also have an option to bring their own or a third-party commerce platform in their apps, and if they do so they don’t need to pay Microsoft any fee. They can keep 100% of their revenue.
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How to Fix Error 1005 Access Denied
Recently, some users reported that they were unable to access a website and only got the Error 1005 Access Denied instead. Specifically, users experience this issue when trying to open the Crunchyroll website – one of the largest anime and manga websites. This particular error is encountered not just on Crunchyroll but on a variety of websites like blogs, video streaming, forums, and so on. Here’s the full context of the error message:
“Error 1005 Access Denied – The owner of this website has banned the autonomous system number (ASN) your IP address from accessing this website.”
Usually, this error occurs when the website administrator decides to block an IP address or IP range. To fix this error, here are some suggestions you can try:

Option 1 – Uninstall the VPN service you are using or use a different provider

If you are using a VPN service, you might want to uninstall it. As mentioned, website administrator blocks IP ranges if they notice any malicious activities and because of this, your IP address might fall into the banned range even if you didn’t do anything at all. To uninstall the VPN service, follow the steps below.
  • Tap the Win + R keys to open the Run dialog box
  • Then type “appwiz.cpl” in the field and hit Enter to open the Programs and Features in Control Panel.
  • From there, look for the VPN service you are using, select it and then click on Uninstall to remove it.
  • After that, restart your computer and try to install the latest version of the program again. It should work now. If not, proceed to the next available option below.

Option 2 – Try disabling the Proxy server

There are some users who reported that they’ve fixed the problem after they’ve disabled the use of a proxy server using the built-in way. Follow the steps below to disable proxy server.
  • Tap the Win + R keys to open the Run dialog box.
  • Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
  • After that, go to the Connections tab and select the LAN settings.
  • From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
  • Now click the OK and the Apply buttons.
  • Restart your PC.
Note: If you are using a third-party proxy service, you have to disable it.

Option 3 – Use the Google Public DNS

You might want to change your DNS to Google Public DNS as it could also help you in fixing the ERR_CERT_COMMON_NAME_INVALID error in Chrome. To do so, follow the steps below.
  • The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
  • Next, click on the “Change Adapter Settings” option.
  • After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
  • Right-click on your network connection and click on Properties.
  • Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
  • After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
  • Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 4 – Try contacting the website administrator

If the first three given options didn’t work, you might want to consider contacting the website administrator especially if you’ve already determined that the issue does not occur due to a VPN or proxy server that you’re using. This option can be quite tricky since you won’t be able to submit a contact form since you’re banned from accessing the website but you can contact the admin via the form section if available.
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