Can I fix Error 0xc000021a by myself

Are you wondering "Can I fix Error 0xc000021a by myself"

Yes, you can fix error 0xc000021a by yourself if you have been working on your Windows PC in your day-to-day life then, you can definitely fix it by yourself. What you need to do is just follow through our guide. Error 0xc000021a occurs on your windows when either Winlogon.exe or Csrss.exe fails. So, to fix your error follow through our Windows Troubleshooting Guide.

Can I fix Error 0xc000021a by myself

Meaning of 0xC000021A on your Computer.

The error code 0xC000021A means STATUS_SYSTEM_PROCESS_TERMINATED. When a Pc runs through an essential operation, such as WinLogon (winlogon.exe) or the Client Server Run-Time Subsystem (csrss.exe), fails, this error occurs. When the kernel detects that one of those services stops functioning, the STOP 0xC000021A error is raised.

STOP 0xC000021A error is one of the most common technical errors found on a Windows system.  It's basically a blue screen error that automatically causes your system to crash and hinders your workflow. Whether you've encountered this blue screen error for the first time or you're encountering it repeatedly this guide will help you fix your system in every case.

Quick ways to Solve Error 0xc000021 on your windows. 

In this guide, we will share you some of the Quickest solutions to this error. Remember that not all options will work for you. It is possible that you may have to attempt all of the following remedies until you discover one that works for you. 

1. Disconnect or Unplug All External Interfering Devices
2. Booting Windows without the Driver Signature Enforcement Feature
3. Run a DISM Scan
4. Run an SFC Scan
5. Rebuild the Boot Configuration Data
6. Reset BIOS

Solution 1: Disconnect or Unplug All External Interfering Devices

In many situations, the error might get triggered by external interfering devices. If you've connected multiple external devices on your computer, make sure to disconnect them one by one and only keep the useful devices such as your mouse and your keyboard connected. 

You need to Disconnect or Unplug All External Interfering Devices 0xC000021A error.

In this way, if it's a broken USB device that's triggering the Error 0xc000021a then you'll be able to resolve it without any hassle.

Solution 2: Booting Windows without the Driver Signature Enforcement Feature

Another method to fix the stop code error in Windows 10 is by disabling the driver signature enforcement. This is a security feature that is designed to block drivers that aren't digitally signed by the Windows operating system during startup. 

But sometimes it might end up blocking important drivers from loading smoothly. So, if unplugging the external interfering devices didn't fix the problem you can try disabling the driver signature enforcement feature.  To do this,

Step 1: Click the start button and then press and hold the shift key and select restart from your power menu.

(Your system will automatically boot in recovery mode.)

0xc00021a windows 10 fix

Step 2: Click Troubleshoot Advanced Settings and then select Startup Settings.

0xc00021a Windows 10 won't boot

Step 3: Click on the restart button and let your system reboot again then finally press F7 to disable the signature enforcement feature.

This should solve your issue with 0xc000021a but in case you're still seeing the error after this you can move on to our next method.

Solution 3: Run a DISM Scan

The next method to fix this error is using the DISM command to automatically fix various Windows-related issues. What you'll have to do is,

Step 1: Go to search and type Command Prompt.

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Step 2: Move your cursor to search result and Right click then select run as administrator.

0xc00021a windows 10

Step 3: Enter dism /online /cleanup-image /restorehealth

The scan can take up to about 10 minutes to complete but once it's finished restart your computer and see if you encounter stop code: 0xc000021a error again or not.  If not move on to the next solution.

Solution 4: Run an SFC Scan

Sometimes it might be possible that there are corrupt system files that are causing the problem.  If that's the case you can use Windows built-in System File Checker utility to fix the error.  This utility automatically scans and repairs corrupt system files. To do this,

Step 1: Open the search box and type the command prompt.

Step 2: Right-click on the search result and select run as administrator. 

Run an SFC Scan

Step 3: Once the cmd window opens on your screen type sfc/scannow and press enter.

If the stop code error is still persisting. Now you'll have to perform some more advanced solutions to fix the error.

Solution 5: Rebuild the Boot Configuration Data

The next method to fix the stop code: 0xc000021a error is rebuilding the boot configuration data through command prompt for this solution. However, you are going to need a dedicated Windows installation media either a USB drive or a DVD.

Step 1: Insert the Windows installation media onto your computer and then make your PC boot from it. 

0x00021a error windows 10

Step 2: Once the system successfully boots from the drive select the language and time zones and then click next. 

troubleshoot

Step 3: On the next screen select repair your computer and then click troubleshoot.

Can I fix Error 0xc000021a by myself

Step 4: Select advanced options in the advanced startup menu.

Step 5: Select Command  Prompt and then execute these commands one by one:

• C:\WINDOWS\system32>bootrec/fixmbr
• C:\WINDOWS\system32>bootrec/fixboot
• C:\WINDOWS\system32>bootrec/scanos
• C:\WINDOWS\system32>bootrec/rebuildbcd

Rebuild the Boot Configuration Data

After this process reboot your system normally and check if the error has fixed itself or not, if not we have our last method to fix this 0xc000021a Error Code on Windows.

Solution 6: Reset BIOS

In case none of these previous solutions have fixed the issue the last method would be to reset the BIOS itself.  

Step 1: Resetting your BIOS might sound confusing but it's actually a relatively easy process.  

Step 2: All you have to do is repeat the same process that we've just performed in the previous step to boot your system into advanced startup using your Windows installation media.

Can I fix Error 0xc000021a by myself

Step 3: Then in the advanced startup window select UEFI Firmware Settings and click Restart to reboot your system normally.

Conclusion

Stop code: 0xc000021a error is one of the common errors you will be facing during your lifetime of using a computer. So, don't worry if you see a blue screen with a 0xc000021a error then you will be able to resolve this problem by yourself. My friend Jeread also had to face a similar error on his PC, and he fixed it using the above-mentioned solutions in this guide. In this guide, we have listed and guided you through step-by-step 6 useful methods to solve 0xc000021a error on your Windows. I hope I have resolved your query "Can I fix Error 0xc000021a by myself".

FAQ

What does SFC Scan do?

The SFC utility scans all of your system files and it will automatically repair them if needed.