Fatal Error c000021a is a type of Windows stop error also known as the blue screen of death (BSoD) error. When this error occurs, it causes the computer screen to go blue and locks the user out of the current activity.
This error code is fatal and can lead to serious issues like system crashes and freeze.
The error code is usually displayed in the following format:
STOP: c000021a {Fatal System Error}
The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x0000000)
Error CausesFatal Error c000021a occurs when the Windows kernel detects that either Winlogon.exe or Csrss.exe service processes have stopped responding or failed to load. When this happens the error code pops up on the screen.
Nonetheless, this is not the only reason for the occurrence of this error. There are plenty more reasons why Fatal Error c000021a may pop on your computer screen. These include:
No matter what the reason may be, it is advisable to fix the error right away without any delays. Remember it is a fatal error and can cause a great deal of damage to your PC.
Fatal Error c000021a is a serious PC issue but this does not mean you have to hire an expert to get it fixed. The good news is that this error is actually quite easy to resolve.
You don’t have to be a technical whiz or a computer programmer to fix Fatal Error c000021a on your PC.
Here are some do it yourself methods to fix this error code right away without any hassle:
Let’s get started:
As we mentioned about corrupt or missing drivers can be one of the many reasons for the occurrence of this error. So, check the drivers first. Perform a driver scan and make sure all your drivers are updated.
To do this, first launch Task Manager by pressing CTRL+SHIFT+ESC on your keyboard. Now click on the application tab and then click ‘New Task’ then browse.
After that, go to C:\Windows\System32\Restore folder and then double click the rstrui.exe file. This will help start system restoration. Your computer will reboot during the process and hopefully, the error will be resolved.
Nonetheless, if the error still persists then try methods 3 and 4.
Sometimes Fatal Error c000021a may also occur due to malware infection. Your PC may be affected by viruses hidden in different locations without you knowing about it.
Therefore to resolve this error, it is recommended to run an antivirus and scan for viruses. If detected, remove them right away to fix the error code.
Another method to resolve Fatal Error c000021a code on your system is to repair the registry. The registry stores all the information and activities performed on the system.
If it is not cleaned frequently, it gets loaded with too many files unnecessary and obsolete files like the junk files, cookies, internet history and temporary files which corrupts and damages the registry thereby generating blue screen of death error codes like Fatal Error c000021a.
Though you can repair the registry manually it can be both time-consuming and slightly difficult especially if you are not a computer programmer. Therefore it is advisable to download a registry cleaner to fix it right away.
Whether the Fatal Error c000021a code occurs due to viral infection or registry issues, download Restoro. This is a next-generation, advanced, and multi-functional PC Fixer. This software is deployed with multiple utilities such as a powerful registry cleaner, an antivirus, a system optimizer, and more.
The registry cleaner scans the entire PC and detects all types of registry issues at once. It cleans the registry, wipes out all the unnecessary files, and restores the registry back to normal.
Simultaneously, the antivirus embedded in this software detects all types of viruses including malware, adware, spyware and Trojans and removes them in seconds.
The system optimizer feature ensures the speed and performance of your PC are not compromised during the repairing process. It ensures your PC works at its optimal speed.
Restoro is a one-stop solution for all your PC needs. It has a user-friendly interface making it easy for all levels of users to work around. It is compatible with all Windows versions
Click here to download Restoro and resolve the Fatal Error c000021a code on your PC today!

Error code 0xc0000001 on Windows 10 has been reported by some users when attempting to install Windows 10. When you encounter this error, the setup will be in a loop and the error message will keep popping up.
Error CausesIf you encounter the error code 0xc0000001 while trying to install Windows 10, it most probably be due to corrupted installation file. However, it can also be caused by any of the following:”
Here are some methods that will help you fix the error code 0xc0000001 while trying to install Windows 10. Do not perform these methods unless you’re absolutely confident you can do it properly. Otherwise, you might make things worse.
If you’re not that confident, consider seeking advice from a technical expert. If you can’t afford one, you may want to consider getting an automated software to fix the job.
If you need to manually wipe the drive and then convert it to GPT, follow these steps:
select disk <disk number> (press enter)
clean (press enter)
convert gpt (press enter)
exit (press enter)
Note: when you’re prompted to choose the installation type, make sure to choose Custom. Then, choose unallocated space and click Next. This will automatically start the installation of Windows 10.
Automatic Repair is a Windows feature/utility that allows you to fix certain system problems preventing you from installing or starting Windows. It works by scanning your computer system for any potential problem and tries to fix it.
This will automatically run the utility.
Another possible reason why you are getting this error while installing Windows 10 is due to the connected external hard drives. To fix this, power down your computer. Afterward, unplug and remove all connected external hard drives. If you’re using USB device to install Windows 10, ensure your BIOS is set to boot your computer from the USB.
Another possible reason why you experience this error is that your copy of the Windows 10 installer is corrupted. To fix this, it’s better to create a new copy of the Windows 10 installer.
If you still encounter these errors after performing the above methods, find a trustworthy automated tool. As long as the automated tool is powerful and reliable, it will help you fix this error.
Error Causes“Error 0x80070079: The semaphore timeout period has expired.”To fix this error, you can try to run the three built-in Network-related troubleshooters or update or reinstall the network adapter drivers or perform a network reset. For more details, follow the options laid out below.
Another driver device error message you might encounter is error code 41.“The drivers for this device are not installed. (Code 28)”
MyScrapNook is a browser extension for Google Chrome that allows users to easily find scrapbook templates, layouts, and graphics. This extension requires the use of Adobe Flash Player and does not work with Chrome’s built-in flash player.
When installed MyScrapNook will change your home page and default search engine to MyWebSearch.com. It will also inject unwanted ads and sponsored links into your search queries. This extension has been marked as a Browser Hijacker by several anti-virus applications and is recommended to remove it from your PC.
From the Author:
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