Fix Google Chrome screen flickering issue

What Is Runtime Error R6034?

Runtime Error r6034 is one of the most commonly occurring errors.  This error usually arises in Windows Vista and Windows 7. The message that appears to the user states ‘An application has made an attempt to load C runtime library incorrectly, please contact the support team for more information’. As the message suggests, this problematic error occurs simply because an application attempts to load the C runtime library without a manifest.

Solution

Error Causes

Runtime Error r6034 occurs when the system compiler fails to compile the working application. While this is the primary reason, there are some other conditions that trigger Runtime Error r6034 which are outlined below.

• Existence of viruses and malware in the system.
• Corrupt or missing system files.
• Power outages.
• Hardware problems.
• Hardware driver problems.

There are several other reasons that may trigger Runtime Error r6034 that are beyond the scope of this article. Regardless of what triggers this error, it is crucial to ensure that it is fixed as soon as possible.

Further Information and Manual Repair

There are several ways to deal with Runtime Error r6034. However, one of the most effective ways is listed below as follows.

• When this error occurs, restart your computer. Make sure you press F8 before the windows logo is displayed.
• Choose safe mode and press enter.
• Go to the ‘Start’ button and type ‘msconfig’ in the search box. Press enter.
• The MSConfig program will now open.
• Choose ‘Start up’ in the general tab and then click on the ‘Load Start Up’ item.
• Click on the ‘Services’ tab. Now click ‘Hide all Microsoft Services’ and then choose ‘Disable All’.
• Close the system configuration window.
• Restart the computer.

After restarting your computer, you will notice that the Runtime Error r6034 has been removed. If this approach fails to deliver the desired results, it is advised to follow the steps listed below.

• Go to the start button. In the search box, type ‘System Restore’.
• When System Restore appears, click on it.
• The system restore window will open. Make sure any process or application that’s open is now closed.
• In the System Restore window, if a calendar list appears, it means the restore point is open. Now choose the point from where the error appeared and click Next.
• This process may take some time. Your system will restart automatically and the Runtime Error r6034 will disappear.

The Recycle Bin is undeniably an important place to make files ready for deletion. To put it simply, it assumes some importance but there are times when it displays an unpredictable behavior. For instance, it just suddenly goes missing and even Cortana is unable to find it. A lot of users have experienced the missing Recycle Bin issue in their Windows 10 computers. If you are one of these users, you might have wondered where the Recycle Bin icon has gone and how you can get it back. Worry not, as this post will provide you a couple of options you can try to bring back Recycle Bin in your Windows 10 computer. Follow the given options below to get started.

Option 1 – Try to restore Recycle Bin

It could be that you have disabled the Recycle Bin by accident which is why Windows was not able to show it on your desktop. To restore Recycle Bin, follow these steps:

• First, click on the Start button and select Settings.
• Next, select the Personalization setting and then select Themes from the left pane.
• After that, click on the “Desktop icon settings” link under the “Related Settings” heading. This will display a list of icons in the Desktop Icons window.
• From there, make sure that you check the checkbox for “Recycle Bin” to make it appear on your Desktop screen once again.

Option 2 – Try to recreate the Recycle Bin

If the first option didn’t work, then it could be that Recycle Bin might have been deleted which is why you fail to restore it. And to resolve this problem, you need to recreate Recycle Bin. Refer to the following steps to do so:

• You need to launch the Windows File Explorer first and go to the View tab.
• From this tab, select Options and click on the drop-down arrow and then select the “Change folder and search option”.
• Afterward, switch to the View tab when the Folder Options window appears on your screen and select the “Show hidden files, folders, and drives” option.
• And then unmark the checkbox next to the “Hide protected operating system files (Recommended)” option and click on both the Apply and OK buttons, respectively.
• Next, go back to the File Explorer and click on “This PC” located on the left bar and go to the C: drive.
• From there, you will find a file named “$Recycle.Bin” located at the top.
• Open this folder to access its contents and you should see the Recycle Bin icon located at the top.
• After that, right-click on the Recycle Bin icon and click on the “Send To” option and then click on “Desktop (create shortcut)”.
• It will then confirm and recreate the Recycle Bin icon on your Desktop screen.

Note: Even though this icon is quite similar to the original one, it actually differs from it. The difference is that you won’t see if fill up when you delete files and you can’t simply empty it by right-clicking on the shortcut. On the other hand, you can still drag items into it just like with the original one. So when you want to empty the content of the newly restored Recycle Bin, you just have to double-click on the shortcut and right-click on the recycle bin in the window that appears, and select the “Empty Recycle Bin” option. In addition, now that you’ve set up the Recycle Bin shortcut, you have to re-activate the “Hide protected operating system files” to keep the important files and folders in your computer hidden.

Option 3 – Try to repair the Recycle Bin

If both the first two options failed to restore the missing Recycle Bin, then you can try repairing it instead. There are times when the Recycle Bin is removed from the Desktop screen due to some corrupted Windows system files. To fix these corrupted system files, you can run the DISM tool. This tool is known to repair potentially corrupted files in your system as having them could also system issues like the missing Recycle Bin. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the problem is now fixed.

Option 4 – Make sure that you are not in Tablet Mode

Since Windows 10 is designed to work on both desktop and mobile devices, it could be that your computer has slipped into Tablet Mode which explains why you’re not seeing the Recycle Bin. To check if your computer is really in Tablet Mode, follow these steps:

• Go to the Start menu and select Settings.
• Next, select the System setting and from the left pane select the Tablet Mode.
• From there, make sure that the buttons next to the options given below are set to the off position:
  • Hide app icons on the taskbar in tablet mode
  • Automatically hide the taskbar in tablet mode

Sharing is caring, an old saying says. I completely agree and that is reason enough for this article filled with sharing goodness. Holidays are coming and I hope that the holiday spirit is strong with you, that you will spend them in peace and with loved ones. All that being said wouldn’t it be great if you can spend some joy with close ones and share some of your games on their account so they can enjoy them as well? Well, you can and it is not complicated as well. Follow this easy guide to see how can you get someone’s account up and running with some of your games.

The steam Family sharing feature

The family Sharing feature inside Steam will let you share your games to another account so owners of that account can play games that you have purchased without the need to buy themselves. You can allow up to 5 accounts and 10 devices to play your library games, and owners of these accounts will have their own achievements. Be aware that enabling this option will place your entire library on the share, you will not be able to choose which games you would like to share and therefore any kind of parental controls are not applying here. Also know that once the game is running on one device, others will have to wait for one playing to finish before they can get a spin on it. Only the owner of the game can play whenever he wants as a priority but others will have to wait for the game to be not run by someone else.

How to Share Your Game Library

In order to share your game library have a person, you wish to share games with at his device on ready to go and enable steam guard on your account. To enable steam guard login into your account and on the top left corner click on Steam and then on Settings. Inside settings click on the Manage Steam Guard Account Security button. Choose the way of authentication either by mail or steam guard mobile app. Check Get Steam guard codes by email radio button and re-login into account.

Sharing Games on another Steam account

Now that Steam Guard is enabled on the primary account let’s share some games!!! Inside client again, in the top left click on Steam and again on settings. In the left panel choose and click on Family. Inside Family section check box beside Authorize Library Sharing on This Computer. Log out of your account and login into the client user account credentials you wish to share your library with (this is your friend or cousin account, they need to log in to Steam client on your computer but with their credentials). After they have successfully logged in, log them out and re-log with your account again. Now go again into Steam > Family and now you should see an account in the box at the bottom with the user name or your friend or relative. Confirm that this is an account that you wish to share the library with by clicking on the checkbox next to the name. Now let users login into the desired device with their credentials and they will have access to your entire library. Happy gaming!

In the past, CDs, DVDs, and floppy drivers used to be the primary sources of external storage for many users – that is until the USB storage devices took over. These days, a lot of devices no longer have a built-in CD or DVD writer or reader as it contributes to the thickness of the device. On the other hand, there are still various devices that still come with a built-in CD or DVD writer or reader. However, recently, users who still use CD or DVD on their devices reported a problem where the CD or DVD icon is not visible in the File Explorer as well as in “This PC” or the My Computer page. The cause of this issue is still unknown at the time of writing, but there are still some potential fixes you can try to fix it. You can try to update or roll back the device drivers or apply some tweaks in the Registry Editor. For more details, refer to the given options below.

Option 1 – Try to update or rollback device drivers

The first thing you can try to fix the missing CD or DVD icon is to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties. Note that the concerned drivers will be listed under the DVD/CD-ROM drives section as well as the IDE/ATAPI Controllers section.
• From there, look for the following drivers:
  • ATA Channel 0.
  • ATA Channel 1.
  • Standard Dual Channel PCI IDE Controller.
• Now, right-click on each one of the listed drivers and update them all. You could also try to roll them back to their previous versions.

Note: You can also directly download the relevant drivers of your computer from the manufacturers’ website. So if you have an SSD, the issue might be due to an old storage driver.

Option 2 – Try to use the Registry Editor

• Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and then tap Enter to open the Registry Editor.
• Next, navigate to this registry key: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318}
• After that, look for the DWORD values named “UpperFilters” and “LowerFilters”.
• Right-click on each one of these DWORD values and select Delete.
• Now restart your computer and see if it fixes the problem.

Option 3 – Try creating a new Registry entry

There is another option you can try in the Windows Registry to fix the missing icon of the CD/DVD. You can try adding a new entry. How? Refer to these steps:

• Tap the Win ­+ R keys to open the Run dialog box and type “Regedit” in the field and hit Enter to open the Registry Editor.
• After that, navigate to this registry path: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesatapi
• From there, right-click on “ATAPI” and select New > Key.
• After that, name it is “Controller0” and right-click on the sub-key and then select New > DWORD (32-bit) Value.
• Now name it as “EnumDevice1” and double click on it and then set its value data to “1”.
• Click OK and restart your computer to apply the changes made successfully.

Scammers have decided to target Windows’s 10 App installer process in order to infect your computer and steal your data. As in most usual online scams, everything starts with a strange email containing threats and other poorly written and composed speech. At the end of the given email, there would be a link claiming that you, of course, need to read it and follow instructions about the threat, if you click the link it will open a web page where you will have an innocent-looking PDF file with more information about the threat itself. If you click on a seemingly innocent PDF file it will summon Windows 10's AppInstaller.exe tool, kickstarting a download-and-run process that'll put you in a bad place very quickly. From there, you'll have to deal with the dangers of malware BazarBackdoor, including data and credential theft. This kind of scam is nothing new but the interesting thing here is that it uses App installer and by clicking on a link you are opening and giving permission for a malicious crook to use it. So, stay safe and do not click on any links from unknown emails no matter what.

There are not many applications for creating mind maps, even fewer that are completely free, so it is with great pleasure to present you with Freeplane. Freeplane is mind mapping, Knowledge Management, and Project Management software completely free and open source. You can it here: https://sourceforge.net/projects/freeplane/files/latest/download

And from developers git page and I quote:

Freeplane is a free and open-source software application that supports thinking, sharing information, and getting things done at work, in school, and at home. The core of the software is tools for mind mapping (also known as concept mapping or information mapping) and using mapped information. Freeplane is written in Java using OSGi and Java Swing. It runs on any operating system that has a current version of Java installed. It can be run locally or portably from removable storage like a USB drive. We use Github only as of the main code repository, all other project parts are hosted at the source forge. So all bugs and feature requests are managed in a separate issue tracker. There is a drop-down box for selecting different types of issues. Other sources of inspiration are our new forum and old forum. Some users write their ideas there. Every contributor and every team member freely decides what task he is going to work on, but for making the best decision we can communicate our self-set goals in the above forum. It is supposed to enable early discussions and community feedback and also to motivate you and other people.

How to start hacking and contributing

People new to the project can start with implementing a new small feature or doing some refactoring or documentation and not with the bug fixing. Not all bug reports seem to be equally important, and if there are important bugs they usually get fixed by people who broke the functionality. I think you should first get there :). For internal developer discussions, there is a private mailing list. It is held private to avoid spam mails. If you want to be subscribed let us know what mail address you are going to use with it. This list is the preferred way to ask all code-related questions because they usually get answered soon and by the most competent team member. Some documentation for new developers is available in Freeplane wiki https://www.freeplane.org/wiki/index.php/How_to_build_Freeplane and also here and here. It is written for new guys and should also be maintained by the new guys to stay up to date. Looking forward to any questions and contributions, Freeplane development team

Ntdll.dll Error - What is it?

Ntdll.dll is a type of DLL (Dynamic Link Library) error. DLL errors are some of the most common but complicated errors to troubleshoot and resolve by PC users. The Ntdll.dll error message is displayed in the following formats:

• "STOP: 0xC0000221 unknown hard error C:WinntSystem32Ntdll.dll
• "NTDLL.DLL Error!"
• "STOP: C0000221 unknown hard error SystemRootSystem32ntdll.dll"
• "[PROGRAM NAME] caused a fault in module NTDLL.DLL at [ANY ADDRESS]"
• "AppName: [PROGRAM NAME] ModName: ntdll.dll"
• "Crash caused in ntdll.dll!"
• "Unhandled exception at [ANY ADDRESS] (NTDLL.DLL)"

You may come across the ‘Ntdll.dll error’ pop-up either when you try to run a program or after using it or while the program is running. It may also appear when Windows starts or shutdowns or even during Windows installation.

Solution

Error Causes

The Ntdll.dll error code can be triggered due to numerous reasons such as:

• DLL file corruption due to hard drive bad entries
• Missing DLL files
• Corrupt hardware drivers
• Viruses
• DLL file misconfiguration

It is recommended to resolve this error code immediately on your PC to avoid inconvenience and serious PC damages like program lockouts, system failure, freeze, and crash

Further Information and Manual Repair

All the causes for ‘Ntdll.dll’ are linked with the registry. The registry is the main database of your system. It saves all the activities and files on your PC including the important data file and unnecessary files such as the junk files, temporary internet files, and obsolete files, files of the programs installed, bad entries, invalid registry keys, and cookies. These files take up also hard drive space thereby causing dll file damage, disk fragmentation, and data overload. Ntdll.dll error may also occur to due viral infection and malware attack. There are 2 ways to resolve the Ntdll.dll error. One is to install 2 separate tools, the registry cleaner, and antivirus, and run them separately to scan for errors. This option is time-consuming and running an antivirus can also slow down the speed of your computer. Therefore we recommend that you opt for the second alternative that is to download Restoro.

Why Restoro.

• This is an advanced, innovative, and multi-functional PC repair tool embedded with several powerful PC repair utilities like a registry cleaner, an antivirus, and a system optimizer. This is a one-stop solution for all your PC errors.
• It is user-friendly, safe, efficient, and compatible with all Windows versions. The registry cleaning feature scans for all registry issues.
• It wipes out all the unnecessary files from the hard drive, repairs the damaged dll files, and restores the registry, thereby resolving the Ntdll.dll error code right away.
• The privacy error utility functions like an antivirus. It detects and removes all the malicious software like viruses, malware, Trojans, and spyware. Simultaneously, the system optimizer feature boosts the PC speed.

Click here to download Restoro and resolve the Ntdll.dll error on your PC today!

As you know, Windows 10 has a complicated mechanism for Activation which helps in the verification of a genuine copy of Windows 10. However, there are times when you might encounter some errors during the activation process. One of these errors is the error code 0xc000f074. This kind of error could be due to the Key Management Service or KMS which is unreachable by the client computer or if the key used in the SLSetAuthenticationData function call is incorrect. This kind of error mostly affects surfaces on computers that are upgraded from either Windows 7 or Windows 8.1 to Windows 10. In such cases, you may encounter any of the following error messages:

“Windows is unable to reach your company’s activation service. Please connect to your corporate network. If you are connected and continue to see the error, contact your system administrator. You can also click on the error detail to find the exact error. Error code: 0xC004F074.” “Activating Windows(R), (Key hash)… Error: 0xC004F074 The Software Licensing Service reported that the computer could not be activated. No Key Management Service (KMS) could be contacted. Please see the Application Event Log for additional information.” “Error 0xC004F074, SL_E_AUTHN_MISMATCHED_KEY, The Software Licensing Service reported that the key is mismatched.”

To fix the Windows 10 Activation error 0xC004F078, you have to use the correct key for your type of Windows copy or use Command Prompt to reinstall the key or you could also try running the Activation troubleshooter.

Option 1 – Try running the Windows 10 Activation Troubleshooter

The first thing you can do to resolve the Activation error code 0xc000f074 is to run the Windows 10 Activation Troubleshooter. To do so, follow these steps:

• Go to Settings and then select Activation.
• After that, click on the Windows Activation and then troubleshoot. This will help you address most of the commonly found activation issues in Windows devices.

The Windows 10 Activation Troubleshooter will determine if your license key is a valid Windows 10 digital license for an edition that is not currently installed. If it turns out that it’s not, then the troubleshooter will show you how to install the correct edition.

Option 2 – Try to use the correct key for the type of Windows version you have

If the Windows Activation troubleshooter wasn’t able to resolve the error, then you can try using the correct key for your type of Windows version. All you have to do so is check the type of your Windows copy if it’s OEM, retail, or volume. And make sure that you have the correct, valid product key for your operating system.

Option 3 – Try to use Command Prompt to reinstall the key

• In the Start Search, type “command prompt” and right-click on Command Prompt from the search results, and then select “Run as administrator”.
• After that, execute this command to uninstall the existing key: vbs /upk
• Next, you need to install the KMS product key by executing this command: vbs /ipk <The KMS Product Key>
• Once you’re done, you will see a prompt that’ll tell you whether the operation was either successful or not.
• To active, the KMS product key online, use this command: vbs /ato
• Use this command to activate the key using the telephone: exe 4
• After you’ve activated the KMS product key, restart the Software Protection Service. You can also verify the Activation Status to check if your fix was successful or not.

Option 4 – Contact Microsoft Support for assistance

If you’re at your wits’ end in trying to upgrade your computer, you should consider contacting Microsoft Support for help as they can offer you various options that would make fixing Windows Activation error code 0xc000f074 a lot easier and faster.

The Photos app in Windows 10 is the default photo viewer. However, there are times when it might encounter some problems while you use it. One of these problems in the Photos app reported recently is where users try to export or share the images and videos from the app but weren’t successful in doing so. This can be really quite a hassle in opening images on your computer, especially since the Photos app is the default photo viewer in Windows 10 and if you don’t have any other photo viewer app installed. This kind of problem in the Photos app can be noticed when you try to use the “Remix” function for both photos and videos. In other words, this problem can occur with just pictures, videos, as well as a combination of both. So if you are trying to watch a video using this app, then you wouldn’t be able to play it. In such a case, the only thing you can hear is the audio but you wouldn’t see anything except for a hazy purple screen that has not export or share option. There are several possible causes for this problem and it could be fixed by updating the display driver/graphics driver or disabling the hardware-accelerated video encoding. You could also try updating or resetting or reinstalling the Photos app. For more details, follow each one of the suggestions provided below.

Option 1 – Try to update the Graphics driver

You can try to update your Graphics card driver using the Device Manager in your computer to resolve the blank dialog boxes problem or you can also go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it. To update your Graphics driver via Device Manager, refer to these steps:

• First, boot your computer into Safe Mode.
• After that, tap the Win + R keys to launch Run.
• Type in msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
• After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
• Now restart your computer.
• After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.

Option 2 – Try disabling the hardware-accelerated video encoding

The next thing you can do to fix the problem is to disable the hardware-accelerated video encoding in your computer. To do that, follow these steps:

• Open the Photos app and click on the visible three dots located in the upper right corner of the app and then select Settings.
• From there, you should see the version number of the app in the “About this app” section. So if your app is version 2018.18071.****0.0 or greater, you should see the Video section which has a toggle button.
• Turn that toggle button off to disable hardware-accelerated video encoding in the Photos app. This should fix the problem, if not, simply follow the next given options below.

Option 3 – Try to update the Microsoft Photos app

• Open the Microsoft Store and click on the three horizontal dots for the menu located on the top right portion of the window to see the options.
• Next, select Downloads and updates and then click the Get updates button in the top right. This will install any pending updates for all the apps including the Microsoft Photos app using the Microsoft Store.

Option 4 – Try resetting the Photos app

• To get started in resetting the Photos app, open the Windows 10 Settings.
• Then go to Apps > Apps & features.
• After that, scroll down until you see the Photos app option – click on it and open its Advanced options.
• From there, you will see the Reset button, click on it and click and then click on it once more to confirm.

Note: The process may take a couple of minutes to complete. Once it’s done, open the pictures again using the Photos app.

Option 5 – Try reinstalling the Photos app

If none of the options given above worked, then you might want to consider reinstalling the Photos app. Unlike what most users think, it isn’t really that hard reinstalling preinstalled apps as you have the Windows PowerShell for that. To use this program in reinstalling the Photos app, follow these steps:

• Open the Windows PowerShell program with admin privileges and key in the following command:

Set-ExecutionPolicy Unrestricted

• After that, execute this second command to re-register and reinstall the Microsoft Photos app.

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

Note: In the command given, do not forget to replace the “PackageFullName” with the actual package name for the Photos app. After executing the command, it will uninstall the Photos app from your computer so you need to install it again from the Windows Store by simply looking for it. Once you found it, just click on install to start the installation process.

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.