Stop 0x0000021a win 7 fatal system error

stop 0x0000021a win 7 fatal system error

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Stop 0x0000021a win 7 fatal system error - consider, that

Fix c000021A Fatal System Error: Microsoft without a doubt pushes updates that will fix the bugs and errors on the Windows 10 operating system. But then again, at times when these updates cause or bring in a lot of issues instead of fixes. One of the most possible errors that you might be facing is the hex code c000021A, which was a very recent issue started appearing ever since Windows users have updated to the latest version of  Windows. For those who are unaware, this error, in general, originates in the form of Blue Screen of Death and it may also damage the internal structure of your Windows OS.

But do note that the occurrence of this particular issue is very much rare and problems may escalate quickly. Not to be scared but it would be super challenging to address the issues too and it is worth noting that a lot of people are reporting online that they are facing the issue. Now, do not worry at all as in this guide we shall discuss How to Fix c000021A Fatal System Error on Windows 10 easily.

Also Read: How to Fix Spotify Search not Working on Windows and Android

As mentioned earlier, the c000021A error is considered a critical error, and most of the time it is difficult to repair. But not us as in this post we have compiled a list of various methods with a step-by-step process to fix c000021A Fatal System Error on Windows 10. With that said, in this guide let us discuss How to Fix c000021A Fatal System Error on Windows 10.

Error Details:

STOP: c000021A (Fatal System Error)

The Windows SubSystem sytem 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

Why c000021A Fatal System Error Occur?

fix-c000021a-fatal-system-error

  • When the user subsystem processes got terminated or killed, the system gets into the kernel mode. Windows cannot function without the WinLogon or CSRSS, and for that reason, the blue screen error will be displayed.
  • The bluescreen error also pops up when there is a possible existence of the mismatch in files in the hard drive. This also happens after restoring the system from the restore point or any backup in general. The restore program most of the times skips the essential system files and the program assumes that those files are being used by the system,
  • This could also be caused by installing or updating the device drivers or even after installing the third-party applications.

There are various methods that you can try to fix the issue and majorly this issue can be fixed:

  1. By Uninstalling the Problem Software
  2. By Running SFC Scannow Command
  3. By Running DISM Command
  4. By Performing System Restore
  5. By Runnings Cloud Reset

Now, we shall discuss all these aforementioned methods in detail.

Method 1: Uninstall the Problem Software to Fix c000021A Fatal System Error

On any off chances that you have recently installed or updated software or an application that may well be the cause for this error. In such cases, you can uninstall the problematic software to sort the issue.

Step 1: On your computer press Windows key + R from any window to open Run on your computer.

Step 2: Now in the search box on Run, type the following and click on Enter. (You can also copy-paste the below-mentioned to your Run’s dialogue box)

appwiz.cpl

Now, this opens up Programs and Features on your Control Panel. Alternatively, you can also open up Start and search for Control Panel and choose the option for Programs and Features from there.

Step 3: In the Programs and Features and choose Uninstall or Change a program feature and scroll down from the list of all the programs installed on your computer.

Step 4: Now, choose the program and right-click on it, and then choose Uninstall.

Method 2: Run SFC Scannow Command to Fix c000021A Fatal System Error

Step 1: Firstly, boot your computer into Safe Mode using the command prompt.

Step 2: Open the Start menu or search bar on your computer and search for Command Prompt and click to run it as Administrator.
Do note that you will need to run CMD in Administrator mode. So do not open cmd directly in a folder or via the Run application. 

Step 3: Now, type the following command and hit Enter

sfc scannow

This process might take some time to scan and find out the corrupt files.

Method 3: Run DISM Command to Fix c000021A Fatal System Error

Step 1: Again, open the Start menu or search bar on your computer and search for Command Prompt and click to run it as Administrator.
Do note that you will need to run CMD in Administrator mode. So do not open cmd directly in a folder or via the Run application.

Step 2: Now, type the following command and hit Enter

dism /image:C:\/cleanup-image/revertpendingactions

Now, let the process complete and this takes a while to identify issues and repairs them automatically.

Also Read: How to Fix COD Black Ops Cold War 3107840166 Error

Method 4: Perform System Restore to Fix c000021A Fatal System Error

Step 1: Boot your computer to Safe Mode and then create a system restore point using the command prompt. If the system point is already present, go ahead with the below steps.

Step 2: On your computer press Windows key + R from any window to open Run on your computer.

Step 3: Now in the search box on Run, type the following and click on Enter. (You can also copy-paste the below-mentioned to your Run’s dialogue box)

nstrui

Step 4: It opens up the System Restore window. Now click on Next

Step 5: Now select a Restore Point from the list and click on Next

Step 6: Review the details and press the Finish button to confirm.

Accept the prompt when asked and after some time you will get to System restore completed successfully.

Method 5: Run Cloud Reset to Fix c000021A Fatal System Error

Step 1: On your Windows, open the Settings application which you can find in the bottom left corner of the Start Menu.

Step 2: Once the Settings page is opened, click on Update and Security.

Step 3: Next up click on the recovery option which is found on the left side of the panel.

Step 4: Moving on choose Reset this PC option and click on Get Started

Also Read: How to Root Redmi Note 9 Pro Max and Unlock Bootloader

Step 5: In the next window, click and choose on Keep my files and remove everything based on your requirement.

Step 6: In the next window, click and choose the Cloud Download options.

Step 7: Press Reset to confirm and now let the process complete.

This Guide is even Working Properly in 2022

Conclusion

Now, this is our take on How to Fix c000021A Fatal System Error on Windows 10. If this guide helped you to fix c000021A Fatal System Error on Windows 10 easily, do consider sharing this guide with your friends and users who are facing this issue. We at RootUpdate strive to bring you the latest Android, Windows, and Gaming guides and news every day. If you are interested in more posts like this one, do consider clicking on the red bell icon on the bottom left corner of your display to enable notifications. If you already did, sit back and relax. We will notify you each time we post a new article.

Categories How To, WindowsTags c000021A, c000021A Fatal System Error, Fix c000021A, Fix c000021A Fatal System Error

Sure Fix & Repair 0xc000021a – Windows blue screen error 10

0xc000021a
Windows 10/8/7 Error code 0xc000021a falls into the critical error category and is difficult to repair most of the time. Despite this, There are certain ways that you can easily pass this error code and repair Windows 10/8/7 to its original state. Here, in this post, I will explain what this error is, why it happens and how to fix it.

Details error:
STOP: c000021a {Fatal system error}
The Windows subsystem system procedure terminated unexpectedly with a status of 0xc0000005.
The system has been shut down.

The error 0xC000021A is also known as:
STOP 0xC000021A
STATUS_SYSTEM_PROCESS_TERMINATED (State system procedure finished)
HALT: c000021a {Fatal system error}
STOP c000021a

Cause of stop error 0xc000021a

Here, I list all associated reasons that can cause this error. This list will help you discover the true cause of your PC problem.

  1. Misconfigured driver and software: Did you recently install hardware, games, software and drivers and after that started having problems? If your answer is yes, then you can understand why this error appears. Actually, installing incompatible drivers and software replaces original system files and causes fatal error on PC.
  2. Broken log file: As everyone knows, The registry file is the most important file on the PC and editing this file manually can cause serious system problems. Manually or through another third-party application, your PC's log file got broken and, so, your PC cannot start.
  3. Missing system files: It seems that your PC is missing some problems with the system files. This system file can be a dll file, an exe file, a sys file, an ocx file, etc. When these files get damaged, removed or replaced by another program, the system starts up and causes various BSOD errors, including error code 0xc000021a.
  4. Hardware problems: Most of the time, hardware failures also generate the same problem. It can be hard drive, Broken RAM or other piece of hardware. If it is feasible, remove all additional peripherals from the PC and try to start the PC with minimal hardware.

How To Fix Error 0xc000021a And Start Windows Machine Regularly

Here, I provide you with several alternatives to repair and correct this error.

Method 1: use advanced system repair tool

If somehow, can start the PC after several reboots, immediately install the Advanced System Repair Tool and scan and fix problems easily. Once you scan the PC with this tool, lists all problems and gives you a single repair button to repair all those problems. This might be the easiest way to fix BSOD error 0xc000021a.

Method 2: Run the DISM command at the command prompt.

Paso 1: If you are getting the automatic repair window, click Advanced Option and then select Command Prompt.

1_advanced_option_cmd

Paso 2: Run the following command:

2_dismo

Paso 3: Let the procedure finish. Thereafter, 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 previously created a system restore point, have good luck. You can simply restore your PC to the above point and fix this repair more easily.

3_System_Restore

Method 4: disable driver signature enforcement

This is another great option to fix this error code.

Paso 1: and a Advanced option> Startup settings. Here, select no. 7 option Disable enforcement of driver signature Y restart your pc.

startup_settings

Resume:

In this post, I have tried to tell you just one highly recommended method to fix error 0xc000021a. If you get any additional confirmation methods to fix this problem, share your valuable knowledge in the comment box.

SIRIS, ALTO, and NAS: Backup Verification: Troubleshooting STOP Code c000021a {Fatal System Error}

Issue

Screenshot verification of a protected system fails with the error message, "STOP: c000021a {Fatal System Error} The Verification of a KnownDLL failed. system process terminated unexpectedly with a status of 0xc000012f (0x00641a10 0x00000000). The system has been shut down."

Environment

Description

The STOP: c000021a (Fatal System Error) error occurs when the Windows NT kernel detects that either the Winlogon.exe or Csrss.exe processes have failed. When this failure happens, the Windows NT kernel stops the system and generates the stop error message.

Although there can be many causes of this problem, some of the most common causes are:

    • You have mismatched system files installed on the system.
    • A Service Pack installation failed to complete.
    • You recently restored a few files on the hard disk, but the process failed to correctly restore the files that were in use during the restoration.
    • You have an incompatible third-party software on your computer.
    • Missing or corrupt system files.

Resolution

Section 1: Attempt differential merge:

  1. Force a differential merge of the agent using SIRIS, ALTO, and NAS: Differential Merge
  2. When completed, force a screenshot test of the newly created backup using SIRIS, ALTO, and NAS: How To Force A Screenshot Backup Verification
  3. If the issue persists, follow the next section.

Section 2: Attempt to boot without Driver Signature Enforcement

If not caused by inconsistent or broken system files, the stop error 0xc000021a can also result from a device driver lacking appropriate trust mechanisms within the screenshot virtualization.

At your discretion, you can approach this variant of the issue by testing virtualization with Driver Signature Enforcement disabled, in order to confirm bootability in case of a disaster recovery situation. For more information about that feature and what disabling it changes on the system, see this article from Microsoft:Installing an unsigned driver during test(external article)

The steps to boot without signature enforcement are as follows:

1. Start a local virtualization with networking enabled.

2. While the VM is booting, use the connect to VNC option by clicking on the preview window.

3. When the VNC connection is up, click restart in the Datto UI to restart the virtualization.

4. The virtual machine will start to boot on the screen. Immediately press F8 to get to the Advanced Boot Options screen. If access fails, power down the VM and repeat the previous step.

5. Select Disable Driver Signature Enforcement as shown in the image below

disable_driver Figure 1: Disable Driver Signature Enforcement

6. Attempt to boot the VM.

Should you need to access this menu following successful boot, you can set the option again using bcdedit:

bcdedit /set {bootmgr} displaybootmenu yes

Additional Recommendations

Driver Update: Many errors are related to driver problems such as obsolete, outdated or incompatible drivers. A driver update tool is recommended to scan your system for corrupted and outdated drivers and to ensure that all your drivers stay up-to-date.

Section 3: Repair Filesystem

  1. If the above solution did not resolve the issue, perform the following:
  2. On the protected system, run: 'chkdsk /r <driveLetter>' and complete the disk check.
  3. Once the check is complete, run 'sfc /scannow'.
  4. When that has completed, force a differential merge of the agent.
  5. When completed, force a screenshot test of the newly created backup.
  6. If the issue persists, destroy the live dataset of the agent and force a new full backup.
  7. When completed, force a screenshot test of the newly created backup.

fatal system error

Many Windows Users have encountered fatal system error on Windows 10 operating systems from time to time. This error is the trickiest errors that come along with the Blue Screen of Death errors, due to which users get confused as to apply which solution to get rid of this error.

One of the BSOD fatal errors is Stop Error 0xc000021a such fatal error can harm your system so it must be solved as soon as possible. But before that, you must know what does fatal system error means and then move on with the workarounds.

In this article, you will get the effective solutions that will guide you toward fixing the fatal system error Windows 10 and make your PC get rid of bugs, crashes, and other issues. so, let’s get started with this blog…

What Does Fatal System Error Mean?

Fatal system error is also well-known as kernel error, system crash, bug check, or stop error. It occurs when Windows operating system suddenly stops, as the OS has reached a state where it cannot operate the system safely.

How Do I Fix a Fatal System Error?

Fatal system error can be an irritating and problematic error for the users as it interrupts the system with a blue screen. So, this error must be resolved from the Windows operating system as fast as possible. Below are some of the solutions provided, go through them and see which one suits you to fix the system error.

Solution 1- Fix Windows 10 Installation

Sometimes due to any internal and external error, Windows 10 installation can become damaged due to which users encounter fatal system error, in order to fix this you should apply the below-given steps. Use the DISM command to get rid of this issue:

  • Start your PC/laptop via Windows 10 installation media.
  • Open command prompt by pressing Shift + F10.
  • In the command prompt window, type the below command and hit the enter key to run it:

dism /image:c:\ /cleanup-image /revertpendingactions

fatal system error

 

Wait until the process is completed and verify if the system error is fixed or not.

Solution 2- Turn Off Driver Signature Enforcement

Driver Signature Enforcement is a Microsoft security feature that tests the driver to see whether it is working properly or not in the operating system.

This feature can also be the reason behind the Windows 10 system error. Therefore, it is suggested to disable/turn it off and see if it helps in fixing the issue or not.

Apply the below-given steps:

  • Reboot your PC/Laptop and start the Automatic Repair process.
  • Select Troubleshoot > Advanced options > Startup Settings.

fatal system error

  • Press F7 to choose Disable driver signature enforcement.

fatal system error

Once you disable driver signature enforcement, restart your operating system, and check if the fatal system error Windows 10 got resolved or not.

Solution 3- Replace the Damaged Files

Fatal system error can also appear due to damaged system files. So, you have to replace some of the files to fix the error in Windows 10.

Files such as Winlogon,Userinit.exe, and msgina.dll needed to be replaced. You can find these files in the Windows\System32 folder where you can replace them easily.

fatal system error

In order to replace the files you can also use the SFC command, this will not only replace the files but also repair them. Go through the next solution to use the SFC command.

Solution 4- Run the SFC Command

SFC command will replace and repair the damaged or corrupt Windows system files which will vanish the fatal system error Windows 10.

Follow the steps to run an SFC command:

  • Click on Windows icon
  • Type cmd, right-click on it and select run as administrator

fatal system error

  • In the command prompt window, type sfc/scannow and hit the enter key

fatal system error

The scanning process will take some time to execute the command so, you have to be patient. Once the scanning is done, restart your PC and see if the system error Windows 10 got solved or not.

Solution 5- Update the Drivers

Sometimes outdated drivers can also cause system error to occur in the Windows operating system. So, it is advised to update the drivers and fix the error.

Here are the manual steps to update the driver:

  • Press the Windows key
  • Type DeviceManager and tap the enter key

fatal system error

  • In the Device Manager window, search for the driver that requires to be updated
  • Right-click on the driver and select update driver option

fatal system error

  • Now, click on search for automatically updated driver software

fatal system error

If there is any new update version of that particular driver then it will get updated and solve the fatal system error.

You can also update the driver with the help of Driver Easy. This will not only update the old driver but also help in solving all kinds of driver issues with ease.

Get Driver Easy to Update the Drivers Automatically

Solution 6- Repair Damaged Registry

You should also try to fix corrupted registry keys to fix the Windows 10 fatal system error, apply the below-given steps to repair registry:

  • Click on the Windows search box
  • Type Regedit and hit the enter key

fatal system error

  • In the registry editor, navigate to the C:\Windows\System32\config\and copy DEFAULT, SAM, SECURITY, SOFTWARE, and SYSTEM files to any other location (This step is only to have a backup).

fatal system error

  • Again navigate to the C:\Windows\System32\config\RegBack directory and copy its contents to C:\Windows\System32\config\

After applying the above step your damaged registry will be repaired, after that see if the system error got disappeared from Windows or not. If you encounter registry errors then get the solutions to fix it.

Solution 7- Uninstall Recently Installed Apps

If you have recently installed any apps or programs then there is a possibility that due to those apps your Windows is facing a fatal error. Therefore, it is suggested to remove/ uninstall the apps or programs.

Try Revo Uninstaller to uninstall the apps or programs. This tool will not just uninstall the app but also remove the leftover files of the deleted programs as well.

Get Revo Uninstaller to Uninstall the Programs Easily

If the above-listed solutions are not sufficient and you need more manual to try fixing the fatal system error then visit this article- How to Fix Windows Fatal Errors?

Easy Way to Fix Fatal System Error

It is expected that the above-mentioned solutions will work for you in solving the fatal system error Windows 10. But in case you are a non-technical person and find difficulty in performing the manuals then here is an easy way for you.

Try the PC Repair Tool. This highly advanced tool will scan your PC; detect all the errors such as DLL, browser, application, update, BSOD, game, fatal, etc. and solves them automatically.

This tool also repairs inaccessible system files, prevents viruses from PC, optimizes PC performance, and much more. Just download the tool and make your PC error-free.

Get PC Repair Tool to Fix Fatal System Error

Conclusion

So, that was all about how to fix fatal system error in Windows 10. Now, I am concluding my article.

I hope that you liked this article and it turns out to be useful in solving your queries. In case the above-stated solutions didn’t work in resolving the system error then simply move on to the easy way provided above.

Apart from this if you have any other questions or suggestions then feel free to ask by visiting our FacebookPage.

Vikash Singh

Always up to help others with their PC-related issues, Jack loves to write on subjects such as Windows 10, Xbox, and numerous technical things. In his free time, he loves to play with his dog “Bruno” and hang out with his friends.

Categories Windows ErrorsTags delete Fatal system error in Windows 8, Fix Fatal system error in Windows 10, get rid of Fatal system error in Windows 10, remove Fatal system error in Windows 10

How Can I Fix Fatal System Errors On Windows 10?

Fatal system error on Windows 10 is the trickiest Blue Screen of Death stop code error message. This confuses that user thereby making it difficult to decide which solution to apply.

Stop Error 0xc000021a is one dangerous, fatal error that leaves your system dysfunctional; therefore, fixing it quickly is recommended. But before that, let’s understand what a fatal system error message is.

What is a Fatal System Error?

Fatal system error is commonly referred to as a system crash, stop error, or kernel error. It occurs when the operating system cannot function safely. In simple words, the Blue Screen of Death appears to protect your Windows from further damage.

How To Fix Fatal System Errors On Windows 10?

Fatal system error interferes with our work and can crash the system anytime. Therefore, fixing it is important. Follow these workable solutions one by one to fix computer error.

1. Use DISM command

When Windows 10 installation gets corrupted or is damaged, you can use the DSIM command to fix it.

To do so, follow the steps below:

  1. Use Windows 10 installation media to boot PC
  2. Now, open Command Prompt by pressing the Shift + F10 function key.
  3. Here type the following command:
    • dism /image:c: /cleanup-image /revertpendingactions and press Enter.
  4. Wait for the process to finish should solve the stop code error message.

2. Disable driver signature enforcement

Another workable solution to fix fatal system error BSOD on Windows 10 is to disable driver signature enforcement.

Driver Signature Enforcement is a Microsoft security feature that tests the driver to see whether it is working correctly or not in the operating system.

This feature can also be the reason behind the Windows 10 system error. Therefore, it is suggested to disable/turn it off and see if it helps in fixing the issue or not.

Apply the below-given steps:

To do so, follow the steps mentioned below:

  1. Restart your Windows 10 PC during boot time to get the Automatic Repair window.
  2. Once you are there, select Troubleshoot > Advanced options > Startup Settings.
  3. Now to Disable driver signature enforcement press F7.

This will disable driver signature enforcement. Now check if kernel error on Windows 10 is resolved or not.

3. Replace the corrupted files

Often due to corrupted system files, users encounter Fatal system error. Therefore, to fix it, you will need to copy and paste Winlogon,Userinit.exe, and msgina.dll from a different Windows 10 PC to the one you are facing a problem with.

These files are saved in the WindowsSystem32 directory. Copy them and paste it to the computer you are facing. Before copy-pasting the files check Windows 10 version. It should be the same if you copy 64-bit version files into 32-bit version Windows you will face problems.

4. Repair your registry

Sometimes by repairing the invalid and corrupt registry, you can fix the error message. For this, you can use a tool like Advanced System Optimizer that offers registry cleaner.

 

download

However, if you want to do it on your own; below are the steps.

Note: We do not recommend making changes to the registry as this might harm your system.

  1. Press Windows + R keys
  2. In Run window copy-paste: C:\Windows\System32\config
  3. Once there, copy DEFAULT, SAM, SECURITY, SOFTWARE, and SYSTEM files to a different location for safety purposes.
    fatal system errors
  4. Again, open Run window and copy-paste C:\Windows\System32\config\RegBack press enter.
  5. From here copy DEFAULT, SAM, SECURITY, SOFTWARE and SYSTEM files to C:\Windows\System32\config\

fatal system errors

 

This should help fix the issue. However, if you are unable to boot normally into Windows 10, try booting in Safe Mode and then follow the above steps.

5. Run SFC scan

Designed to repair corrupted files, the SFC scan helps get rid of fatal system errors. To run the SFC scan, follow the steps below:

  1. Type Command Prompt in Windows search
  2. From the search result select and click Run as administrator from the right
  3. Type sfc/scannowand hit the enter keyfatal system errors
  4. Wait for the process to finish.

This should fix the stop code error message.

6. Rollback or update drivers

Sometimes Fatal system errors occur due to updating incorrect drivers. Therefore, we will need to Roll Back updated drivers.

To avoid such situations, you can use a driver updating software that knows which driver to update. Not only this, but you can also even take a backup of an old driver before updating them and use either the trial or Pro version.

Benefits don’t end here, Systweak even offers a 60-day money-back guarantee this means if you are unhappy with the purchase can return within 60-days of purchase.

How to Roll Back Driver Manually on Windows 10?

In Windows search, type Device Manager.

Choose the search result and press enter.

Look for the driver you just updated.

Select it > right click > Properties > Driver tab > Roll Back Driver

fatal system errors

If the Roll Back Driver button is greyed out click uninstall.

This might fix the issue.

Now download the updated version of the driver manually or can use Smart Driver Care for it.

7. Run chkdsk

CHKDSK (check disk) is another workable solution to fix fatal system errors.

To use it, run Command Prompt as administrator and type enter chkdsk /r C: press the enter key.

Wait for the process to finish.

To run a scan on all partitions, make sure to replace C with the other driver letters. Now run Windows you should not face the Blue Screen of Death.

8. Reset Windows 10

If nothing works try resetting Windows. To do so, restart the computer during boot time until you get Automatic Repair and then follow steps explained below:

  1. Select Troubleshoot > Reset this PC > Remove everything.
  2. When asked insert the installation media
  3. Hit Only the drive where Windows is installed > remove my files option
  4. Click the Reset. This will start the process.

If this too doesn’t help, then you will have to do a fresh Windows install.

Note: Both these steps will delete all data so before doing them make sure you have the backup of all critical files.

Using the above steps, you will surely be able to fix fatal system error, an error that makes the OS inoperable. Sometimes due to hardware also you can face this problem; therefore, check the motherboard if it is faulty or corrupt replace it to avoid facing this error message in the future.

We hope you found the guide informative and useful. If that is true, share it with others to help. If not share your feedback in the box below.

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