Sure Fix & Repair 0xc000021a – Windows 10 Blue Screen Error

The Windows 10/8/7 Error Code 0xc000021a comes under the critical error category and most of the time it becomes difficult to repair. However, there are certain ways by which you can easily bypass this error code and repair Windows 10/8/7 to its original state. Here, in this article, I will explain what this error is, why it occurs, and how to fix it.

Error Details:
STOP: c000021a {Fatal System Error}
The Windows SubSystem system process terminated unexpectedly with a status of 0xc0000005.
The system has been shut down.

The 0xC000021A error is also known as:
STOP 0xC000021A
STATUS_SYSTEM_PROCESS_TERMINATED (Status System Process Terminated)
HALT: c000021a {Fatal System Error}
STOP c000021a

Cause of Stop Error 0xc000021a

Here, I am listing out all the related reasons that can cause this error. This list will help you to figure out the real cause of your pc problem.

  1. Misconfigured Driver & Software: Did you recently install hardware, games, software, and driver and after that, you start getting problems? If your answer is yes, then you can understand why this error appears. Actually, installing incompatible driver and software replaces the original system files and cause a fatal error to PC.
  2. Broken Registry File: As you all know that registry file is the most important file on a PC and editing this file manually can cause severe system problems. By manually or by other third-party applications, your PC’s registry file got broken and thus your PC is unable to start.
  3. Missing System Files: It seems that your PC has some missing system file issues. This system file may be dll file, exe file, sys file, ocx file etc. When these files get damaged, deleted or replaced by another program, the system starts to cause several BSOD errors including error code 0xc000021a.
  4. Hardware Issues: Most of the time hardware failure also causes the same problem. Might be Harddrive, Ram or other hardware part is broken. If possible, remove all the additional peripherals from the PC and try to start PC with minimal hardware.
How to Fix Error 0xc000021a and Starts Windows Machine Normally

Here, I am giving you several ways to repair and fix this error.

Method 1: Use Outbyte PC Repair Tool

If somehow, you are able to start the PC after several restarts then immediately install Outbyte PC Repair Tool and scan and fix problems easily. Once you scan PC using this tool, it lists out all the problems and gives you a single fix button to repair all those problems. This might be the easiest way to fix 0xc000021a BSOD Error.

Windows is made with huge number of dll files, exe files, sys files, various types of services, databases, etc so, it is not possible to keep monitoring all the files always. A brilliant PC Optimizer tool repairs damages, fix errors, update windows and drivers, and eliminate various types of errors silently.

Outbyte PC Repair Tool does all the above task easily and provides you an errorfree and smooth Windows environment to work so that you can focus on your business only.

3 Steps to Fix this Error
Step 1. Download Outbyte PC Repair Tool [File Size: 16.4 MB]
Step 2. SCAN your Windows PC
Step 3. Click Fix button to Repair Error

Method 2: Run DISM Command in Command Prompt.

Step 1: If you are getting Automatic Repair Window then click on Advanced Option and then Select Command Prompt.


Step 2: Run Following command:
Dism /image:C:\ /cleanup-image /revertpendingactions


Step 3: Let the process finish. After that run the System File Checker tool using the same command prompt. Run the following command:

sfc /scannow

sfc scan now

Method 3: Restore your PC.

If you have created a system restore point earlier then you are in good luck. You can simply restore your PC with an earlier point and fix this repair more easily.


Method 4: Disable driver signature enforcement

This is another great option to fix this error code.

Step 1: Go to Advanced Option > Startup Settings. Here, select no. 7 option Disable driver signature enforcement and restart your PC.



In this article, I have tried to tell you only the highly recommended method to fix error 0xc000021a. If you get any additional confirm methods to resolve this issue, then please share your valuable knowledge in the comment box.

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