March 2021: List of data breaches & attacks

Error Code 0xc1900106  – What is it?

One of the most common errors encountered by Microsoft users upgrading from Windows 7 or Windows 8/8.1 to Windows 10 is the Error Code 0xc1900106. Microsoft users experience a failure in the installation process. Either they will be notified that the installation process was ended but failed or that Windows is not able to install the update.

Solution

Error Causes

More and more Windows users are having trouble upgrading their operating system to Windows 10. There are a lot of errors being encountered by users and one of them is the Error Code 0xc1900106. This error is normally due to the misconfigured system files. If a Windows user encounters this error, most likely their device has some registry problems.

Further Information and Manual Repair

Fixing error code-related issues could be best resolved to do manual repair methods. Applying repair methods manually can help Windows users address the root causes of the errors they encounter, as well as apply definite solutions to rectify the issue.

Most Windows users can be able to implement manual repair methods themselves but there are some cases where help from a Windows professional is needed. If you’re not a very tech-savvy person and not confident performing the manual repair methods yourself, it would be advisable to seek help from a professional Windows technician who is knowledgeable enough to address the errors or problems you are encountering. However, if you don’t want to resort to seeking help from a professional, you can also consider using a powerful automated tool.

In trying to fix Error Code 0xc1900106, here are the following manual repair methods you can take:

Method One: Custom Installation

1. Make a backup of your personal files
2. Users of Windows 8/8.1 should Refresh first then proceed to upgrade.
3. If the Refresh process does not work, reset your device then try again.
4. If resetting your device still does not work, you can proceed with a custom installation.
5. When your Windows installation media is ready, you need to choose to boot from CD, DVD, or USB drive to begin setup. (For example purposes, this article will discuss booting from DVD).
6. When your device is all set to boot from DVD, you will be prompted to Press any key to boot from CD or DVD…
7. Once you’ve pressed any key, the screen will show the Windows logo which might take a while. No need to worry though, as long as you can see the indicator, you’re good.
8. Choose your Language, Time, and Keyboard method from the drop-down menu then hit Next.
9. Click on the Install Now button then wait until Setup begins.
10. Tick on the I accept the license terms check box then select Next.
11. Choose Custom: Install Windows only (advanced)
12. Choose the Primary partition then select Next. You will be prompted by the following warning: The partition you selected might contain files from a previous Windows Installation. If it does, these files and folders will be moved to a folder named Windows.old. You will be able to access the information in Windows.old, but you will be able to use your previous version of Windows. Just click the OK button then wait as the Windows continue to install. Windows will restart once this phase of the setup completes and will reboot into setup once again.
13. At this point, Windows will detect and install your hardware. Once this finishes, Windows will restart again.

Method Two: Reset Windows Update Components

1. From your device’s desktop, hit Windows key + X to open the command prompt as admin.
2. Once the command prompt window appears, you can type or copy and paste the following commands (all at once):

net stop wuauserv net stop cryptSvc net stop bits net stop msiserver ren C:WindowsSoftwareDistribution SoftwareDistribution.old ren C:WindowsSystem32catroot2 catroot2.old net start wuauserv net start cryptSvc net start bits net start msiserver pause

3. Exit the command prompt.
4. After you reset the Windows Update components, see if you receive Windows Updates which includes the firmware updates for your computer.

Method Three: Ensure Windows is Updated

1. If you have an antivirus, make sure to disable it during the upgrade process.
2. Run Windows Update to check if the system is updated.
3. Ensure that the latest firmware and drivers are installed. To be able to do this, go to the computer manufacturer’s website or you can also try contacting company support.

Windows 10 and Windows 11 have automatic dynamic screen brightness depending on the surrounding light inside the room. Please take note that this option is available only on devices with build-in screens like laptops, tablets, and all in one desktop PC. If you are connected with your PC via an external monitor you will not have these settings available and probably feature is not even working.

Some computers will also allow automatic brightness changes also on what is displayed on the screen. This option is meant to save battery life on devices. Microsoft calls this automatic brightness feature Content adaptive brightness control. In order to change this setting, we will go to settings inside Windows.

Disabling automatic brightness inside Windows

Open Settings inside Windows, in Windows 11 press WINDOWS + I to open settings, then click on the system in the sidebar and then go to Display. Click on the small arrow beside the Brightness slider in order to expand a small menu and then uncheck Help improve battery by optimizing the content show and brightness. If you see Change brightness automatically when lighting changes, uncheck that as well. Close the settings and you are good to go, now brightness will always be as set in settings.

Inside Windows 10, go to Settings and then go to System and then in Display under the Brightness and Color section look below and locate the box that says Automatically adjust contrast based on the displayed content to help improve battery and uncheck it, if the box below with text Change brightness automatically when lighting changes exists, uncheck it as well. Close settings and you are done.

A lot of Windows 10 users prefer the black theme on their computers and when you see anything but black it can get quite annoying. Such as is the case of the Taskbar which, as you know, is usually dark, however, when you take a look at the Cortana search bar, instead of seeing black, you’ll see that it has turned white. To fix this issue, read on as we will provide you some options you can try to set the Cortana search bar back to black. Before you proceed, take note that the options provided below will change all white search boxes to black and that one of these options needs administrative privileges.

Option 1 – Try changing the default App mode

As you know, Windows 10 has two modes, namely the Light and the Dark. Thus, you can switch to the Dark mode so that your Cortana search bar will be black as well. However, remember that it will completely change everything into dark mode so there will be no more Light mode elsewhere.

• First, you need to click on the Start button and then click on the cog icon to open the Windows 10 Settings.
• Next, from the Settings Menu, select Personalization and then select Colours from the left pane.
• Then scroll down until you see the “Choose your default app mode” option and select “Dark”.

After you apply the changes, it will change the Cortana search bar into black instantly. Aside from that, you will also see the User Interface changing into dark mode.

Option 2 – Try changing the Registry value

If you are well-versed in editing registry keys, then you need to try this option. But before you go over the steps below, make sure that you create a System Restore point first so that if anything goes wrong, you can always go back to how it was before the changes were applied.

• Tap the Win + R keys to open the Run prompt.
• Then in the field, type in “regedit” and hit Enter to open the Registry Editor. If a User Account Control prompt appears, just click Yes.
• Now that you’ve opened the Registry Editor, navigate to the following key:

HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionSearchFlightingWhiteSearchBox

• After that, double-click on the “Value” key located on the right pane and set the value to “0” instead of “1” and then click Ok to save the changes made. You should now see a black or grey text box color instead of white.

Option 3 – Try changing the Region

In some forums, a lot of users stated that changing the Region also worked out for them in changing the white Cortana search bar to white. Thus, you need to change the region settings of your computer temporarily. To do so, follow the steps below.

• Type in “Regional Settings” in the box and then click it as soon as it appears from the search results.
• Next, make sure to select a region where Cortana is not available.
• Then select apply to that region. After that, it will change the Cortana search bar color to black.
• Now sign out and sign back in and revert to the original settings. But the changes you made earlier in Cortana will still remain.

What is BuzzDock?

Buzzdock is a browser extension. Buzzdock will be automatically enabled on IE and Chrome following installation, and you may begin using Buzzdock with no further action required. If you elect to optimize Buzzdock performance, the settings preferences of your browser may be adjusted after installation. This browser extension changes your default search provider to Buzzdock.com custom search. It displays additional unwanted ads, banners & sponsored links on web pages that you visit, and it hijacks your browser home page. This browser extension has been flagged as malware by many anti-virus scanning programs.

About Browser Hijackers

Browser hijackers (sometimes called hijackware) are a type of malicious software that modifies web browser configuration settings without the user’s knowledge or consent. These hijacks are rising at an alarming rate worldwide, and it could be actually nefarious and sometimes dangerous too. They’re created to interfere with web browser programs for many different reasons. In most cases, hijackers are made for the benefit of online hackers often through income generation from forced ad clicks and site visits. Nonetheless, it’s not that harmless. Your online safety is jeopardized and it is extremely irritating. They not only screw up your browsers, but browser hijackers can even modify the computer registry, leaving your PC susceptible to other attacks.

Symptoms of browser hijacker malware

There are several signs that indicate the web browser is hijacked: 1. the home page of your browser is changed unexpectedly 2. you find new unwanted bookmarks or favorites added, typically directed to ad-filled or porn sites 3. The default search page of your web browser is changed 4. you see unsolicited new toolbars added 5. you notice a lot of pop-ups on your computer screen 6. your web browser gets slow, buggy crashes frequently 7. you are prohibited access to specific web pages, including the site of an anti-malware software firm like SafeBytes. Exactly how browser hijacker finds its way onto your computer system Browser hijackers infect computer systems in numerous ways, including through a file-share, a drive-by download, or an infected email. They are usually included with toolbars, BHO, add-ons, plug-ins, or browser extensions. Browser hijackers sneak to your computer along with free software downloads also that you unknowingly install alongside the original. Some of the most well-known hijackers are BuzzDock, Babylon Toolbar, Conduit Search, Sweet Page, OneWebSearch, and CoolWebSearch. Browser hijacking can cause severe privacy problems and even identity theft, affect your web browsing experience by taking command over outbound traffic, substantially slows down your computer by consuming lots of resources, and result in system instability as well.

The best ways to get rid of browser hijackers

Certain browser hijacking can be quite easily corrected by discovering and removing the corresponding malware application from your control panel. However, most hijackers are hard to remove manually. No matter how much you try to get rid of it, it may keep returning over and over again. You should consider doing manual fixes only if you’re a tech-savvy person because there are potential risks associated with fiddling around with the system registry and HOSTS file. Browser hijackers could be effectively removed by installing and running anti-malware software on the affected PC. Safebytes Anti-Malware can counter relentless browser hijackers and provide you proactive computer protection against all kinds of malware. Together with anti-malware, a system optimizer program, similar to Safebytes Anti-Malware, can help you correct registry errors, remove unwanted toolbars, secure online privacy, and enhance overall system performance.

Find Out How to Get rid of Malware that is Blocking Websites or Preventing Downloads

Malware could cause all sorts of damage when they invade your computer, starting from stealing your personal information to erasing files on your PC. Some malware sits in between the computer and the internet connection and blocks a few or all internet sites which you want to visit. It might also block you from adding anything to your system, especially anti-malware applications. So what should you do when malicious software prevents you from downloading or installing Safebytes Anti-Malware? There are a few fixes you can attempt to get around with this problem.

Boot Windows in Safe Mode

The Windows OS includes a special mode called “Safe Mode” where only the minimum required programs and services are loaded. In the event, the malicious software is set to load automatically when the computer starts, shifting to this mode may well prevent it from doing so. To get into Safe Mode or Safe Mode with Networking, press the F8 key while the computer is booting up or run MSCONFIG and find the “Safe Boot” options in the “Boot” tab. After you restart the PC into Safe Mode with Networking, you could download, install, as well as update anti-malware software from there. Right after installation, run the malware scanner to eliminate standard infections.

Use an alternate internet browser to download the anti-malware application

Malicious program code might exploit vulnerabilities in a specific browser and block access to all antivirus software sites. In case you suspect that your Internet Explorer has been hijacked by malware or otherwise compromised by online hackers, the best plan of action would be to switch to an alternate internet browser like Mozilla Firefox, Google Chrome, or Apple Safari to download your favorite computer security program – Safebytes Anti-Malware.

Create a portable USB antivirus for removing malware

Another way is to download and transfer an anti-malware program from a clean PC to run a scan on the affected computer. Adopt these measures to run the antivirus on the affected computer. 1) Download Safebytes Anti-Malware or Windows Defender Offline onto a clean computer. 2) Plug the Thumb drive into the uninfected computer. 3) Double-click the executable file to run the installation wizard. 4) Pick a USB flash drive as the location when the wizard asks you where you intend to install the software. Follow the directions to finish the installation process. 5) Transfer the thumb drive from the uninfected computer to the infected PC. 6) Run the Safebytes Anti-malware directly from the pen drive by double-clicking the icon. 7) Run Full System Scan to identify and clean-up up all types of malware.

A Look at the Best AntiMalware Program

If you’re looking to download an anti-malware application for your PC, there are various tools out there to consider however, you just cannot trust blindly anyone, irrespective of whether it is free or paid software. Some of them are excellent, some are ok types, and some will harm your PC themselves! You need to pick a tool that has gained a good reputation and detects not just computer viruses but other types of malware as well. Amongst few good programs, SafeBytes Anti-Malware is the highly recommended program for the security-conscious individual. SafeBytes anti-malware is a trustworthy tool that not only secures your PC completely but is also quite user-friendly for people of all skill levels. This software could easily detect, remove, and protect your computer from the latest malware threats including spyware, adware, trojan horses, ransomware, worms, PUPs, along with other possibly damaging software programs. There are numerous great features you will get with this security product. The following are some of the great features included in the software. Robust Anti-malware Protection: With its advanced and sophisticated algorithm, this malware removal tool can find and eliminate the malware threats hiding within your PC effectively. Live Protection: SafeBytes gives real-time active monitoring and protection against all known computer viruses and malware. This software will continuously monitor your PC for any suspicious activity and updates itself regularly to keep current with the constantly changing threat landscape. Website Filtering: Safebytes assigns all websites a unique safety score that helps you to get an idea of whether the webpage you are going to visit is safe to view or known to be a phishing site. Low CPU and Memory Usage: SafeBytes is really a lightweight application. It consumes an extremely small amount of processing power as it runs in the background so you’re free to use your Windows-based PC the way you really want. 24/7 Online Tech Support: For any technical issues or product support, you could get 24/7 expert assistance through chat and email. To sum it up, SafeBytes Anti-Malware offers great protection combined with an acceptable low system resources usage with both great malware detection and prevention. You now may understand that this particular software does more than just scan and delete threats from your PC. For optimum protection and the best value for your money, you can’t get better than SafeBytes Anti-Malware.

Technical Details and Manual Removal (Advanced Users)

If you wish to manually remove BuzzDock 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 BuzzDock

Sometimes, some applications after they are installed will put their shortcut in the context menu (right-click on desktop) for easy access, most of the time these are some system tied applications like AMD and Nvidia control panels or archives like WinRAR or 7ZIP but it can happen even for some usual application to do this.

There are some applications that you use frequently and they could be worth putting in the context menu, if you want to avoid clutter on the desktop or in the taskbar this is the third place that you should consider placing shortcuts.

Doing this will require some playing and tweaking in the Windows registry editor so be careful when editing the registry since bad entries can lead to system crash or instability. Follow step-by-step instructions.

Adding apps to the context menu in the registry

Creating entry

Open the registry editor by searching Regedit and pressing enter than inside of the registry editor search for the next key:

HKEY_CLASSES_ROOT\Directory\Background\shell

Select shell and right-click on it, hover over New and in the submenu click on Key. In the next step, you need to name a key, this name will be the thing that will be shown in the context menu when you right-click on a desktop so type in the name that you would like or the name of the application that you wish to add to the menu.

If you wish you can even add a keyboard shortcut to launch this specific application. To do this select entry that you have created and edit the default value, inside the edit string in the Value data field type first & and after that key that you would like as a shortcut. Now after right click if you hit your shortcut key app will be launched right away.

Adding command

The next task is to create a command key that will actually hold the command to launch the application. Right-click on the entry that you have created, hover over New, and click on Key.

Next, you’ll need to create the command key that will actually hold the command used to launch the application. Right-click on the new Notepad key, and then choose New \ Key from the menu. Name this key 'command', all in lower case and without hyphens.

Now in order to finish setting the launcher, you need the full path of the file that you would like to run. Locate your file in file explorer or in another tool and copy its path by SHIFT + right-clicking on the file itself and choosing copy as path option.

Now click on the command key and double click on the default key on right to edit it, inside the field value data paste your path to executable. close and save the registry and you are done.

Error Code 0x80070652 – What is it?

Error code 0x80070652 occurs when Windows users attempt to upgrade their operating system while another program is in the process of being downloaded. It may also occur due to problems related to previously failed update attempts within Window Update. When this Windows 10 upgrade occurs, Windows users fail to access the version of Windows they are attempting to download. Instead, a message box occurs stating that error code 0x80070652 has occurred on the device. If this error message is not rectified, it could give birth to other Windows 10 errors such as error code 0x80072EE2.

Solution

Error Causes

Error code 0x80070652 may result from Windows 10 users attempting to download another program while upgrading their operating system. It may also be caused by an issue related to previous installations of updates. For instance, in some cases, your previous installation of the Windows process may have been interrupted or it was simply not completed properly. This causes any other upgrade process that follows to result in error code 0x80070652.

Further Information and Manual Repair

But what can be done in such a situation to resolve the error code? Windows users have several options available. For instance, they can wait on any additional program that may be in the process of downloading to complete the process before attempting to upgrade Windows. They may also troubleshoot problems related to any failed updates or select a system restore point in which the error code was not present.

The manual repair methods Windows 10 users choose may involve any of the solutions mentioned previously. The choice is largely dependent on the user and his determination to fix the error code. However, note that automated tools or Windows repair technicians may also provide solutions to PC issues like error code 0x80070652.

Method One: Verify and Troubleshoot Failed Upgrades

Since previously failed updates within Windows Update can lead to the occurrence of error code 0x80070652, Windows 10 users will need to verify which of these failed updates occurred by checking the history section of the Windows Update tool. Once you’ve been able to verify that failed updates have occurred in the recent past, you’ll need to troubleshoot these problems to rectify the error code. Follow the instructions below to check for updates that have failed to install properly via Windows Update.

• Step one: Type Windows Update in the Search box near Start Menu
• Step two: Select Windows Update settings
• Step three: Select Update history
• Step four: Review updates from the most recent to least recent to see which updates have failed
• Step five: Click failed updates for more details and troubleshoot accordingly.

Once you’ve completed the troubleshooting of any updates which failed, proceed by rebooting your device. You may then reattempt to upgrade to the latest version of Windows 10 once no other program is in the process of being downloaded.

If the problem causing error code 0x80070652 was related to failed updates of the past, these issues will likely be resolved once you successfully troubleshoot them. However, if the error code reoccurs, apply the next manual repair solution mentioned in this article.

Method Two: Download Updates Manually via Microsoft Download Center

Another option available to users is simply downloading updates manually by visiting the official Microsoft website, specifically the Windows section which provides downloads. To successfully complete this process, ensure you look for stand-alone packages of these downloads available on the website. You will need to know the Microsoft Knowledge Base (KB) article number related to the specific update(s) which failed.

Once a Windows user has verified the KB article number of the specific update, download it from the Microsoft website, then select Run to install the update. Reboot your PC, then check Windows Update to see if you are able to successfully complete the Windows 10 upgrade.

If the upgrade fails, you may need to implement the next manual repair method as is mentioned below.

Method Three: Use Windows System Restore

One of the best options for Windows 10 users facing certain PC problems is to apply System Restore. This allows them to reset their machine for a period of time in which the problem was not present. This is known as the restore point. To apply this manual repair method, follow the steps below.

• Step one: In the search box beside the Start Menu, type System Restore
• Step two: Select Create a restore point
• Step three: Select the System Protection tab then Configure or Create
• Step four: Provide details regarding a system restore point of your choice
• Step five: Select Create, then OK.

Method Four: Download an Automated Tool

If you wish to always have at your disposal a utility tool to fix these Windows 10 and other related issues when they do arise, download and install a powerful automated tool.

Speech Recognition is a technology used to control computers using voice commands. Through this feature, you can say commands that your computer will respond to, and aside from that, you can also dictate text to your computer which eliminates the need to type words in any word processing program or text editor. All in all, the Speech Recognition feature allows you to communicate with your computer and improves your computer’s ability to understand your own voice better as well as improve its diction accuracy. However, before you can improve its accuracy, you need to “train the feature” first. And if so far you are not satisfied with its performance, you actually have the option to disable it. So in this post, you will be guided on how you can disable the Speech Recognition feature in Windows 10 v1809.

To disable Speech Recognition on your computer, follow the steps below.

Step 1: Go to Settings > Ease of Access. Step 2: From there, go to Speech. Step 3: Now switch off the toggle button for Speech Recognition to disable this feature. On the other hand, you can also disable the Online Speech Recognition feature if you really don’t want to have anything to do with it. You have two options to do that – you can either do it using Settings or using the Registry Editor.

Disable Online Speech Recognition feature via Settings:

• Click on the Start button and select Settings.
• Next, go to the Privacy section and click on the Speech option located at the right pane.
• Then switch the toggle button off to turn off the Online Speech Recognition feature.

Note: Speech services exist on your computer and even in the cloud since Microsoft collects essential information from these services in order to enhance user experience and if you want to stop this, you have to turn off the “Getting to know you” option under the “Inking and typing Personalization” section.

Disable Online Speech Recognition feature via Registry Editor:

Before you proceed, you need to create a System Restore Point first.

• Tap the Win + R keys to open the Run dialog box.
• Then type “Regedit” in the field and hit Enter to open the Registry Editor.
• Next, navigate to the following registry path:

HKEY_CURRENT_USERSoftwareMicrosoftSpeech_OneCoreSettingsOnlineSpeechPrivacy

• After that, check the default value of the “HasAccepted” key located in the right pane. As you can see its value is set to “1” which means that the Speech Recognition feature is enabled. And so to change it, you have to set “0” as its new value to permanently disable the feature.
• Just double click on the key and change the value from “1” to “0”. Keep in mind that even if you are using a 64-bit Windows 10 computer, you still have to create a 32-bit DWORD value.
• After that, restart your computer to apply the changes made.

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

Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:

• The incompatible third-party program
• Hard disk issues
• Service pack installation has failed
• Mismatched system files have been installed
• Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:

• Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.

• Repair and Restore the Registry

This procedure is slightly long and tricky. To try it, you need to be technically sound. Here’s what you have to do: first create a parallel installation of Windows NT. Start your PC to the parallel installation and then open the Registry Editor. On the Registry Editor’s Windows menu click HKEY_LOCAL_MACHINE on Local Machine and then click Load Hive. Now type the path %systemroot%system32configsystem into the System hive of the prior installation. Then click open. Here you will be prompted to enter the name of the key, type TEST. Note the setting for the current DWord value in the preceding registry key. This is 0x1 and is denoted by CURRENT:Reg_Dword: 0x1. This value indicated that the Current Control Set for your original Windows NT installation corresponds to ControlSet001 in this window. Now if the value is 2, it indicated that the Current Control Set corresponds to ControlSet002. Now locate the following registry key: HKEY_LOCAL_MACHINETESTControlSetXXXControlSession Manager. XXX is the Current Control Set Value. And delete any pending file rename operation entries. Then click TEST hive and then click Unload Hive. After that again repeat the process, open the registry menu and click load hive, here type the path %systemroot%system32configSoftware to the Software hive of the prior installation and then click open. Now you type TEST 2 when you are prompted for the name of the key. Remove any pending file rename operations entries in the following registry keys: HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnce HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnceEx Now click TEST2 hive and then click unload hive. Quit the Registry Editor and then restart your original installation. This will resolve the stop C000021A error.