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Get the Effective Solutions To Troubleshoot Error 0xc000021a

Error 0xc000021a is one of the common issues which are encountered by Windows users on their devices. It shows that your computer has a problem and needs to be restarted. This error appears as and on the Blue Screen of Death. Therefore, serious problems can occur that damage the internal structure of the Windows Operating System. Just after you restart the system, you can get this error code on the screen. The winlogon.exe, file is responsible for entering and exiting Windows. This file may be damaged due to the different third party application or system files. If this file fails, this error will start your computer by logging on Windows. Moreover, if the Csrss.exe files are corrupted or damaged then you can see the 0xc000021a error code on your PC.

So, you have to remove this issue from your computer immediately. Well, if you are one of them who is suffering for this similar problem then stay with this article. We are going to discuss some easy and different solutions for this particular error code.

Effective Solutions that you should Apply to Resolve Error 0xc000021a

When you see the 0xc000021a error on the system you have to simply restart the system. Sometimes, by restarting the system can resolve several issues that you have encountered on your PC. So, you should restart your computer and then check whether the problem is still there. If you find this error again, then you need to use another solution which is mentioned in the section below:

Solution 1 – Booting Windows Manually

This is one of the solutions that we have provided to fix the error 0xc000021a on the system. By booting the Windows system you can easily resolve this particular problem from your computer. The following steps will help you:

Step 1

At first, you should insert the installation Disc into the disc port on your computer. After that, you can select the Restart button to restart the system.

Step 2

After restarting the system, you can see Choose an option list will open. From that list, you need to select the Troubleshoot tab. In the Troubleshoot section, you can get a button Advanced Options, select it.

Step 3

In the next window, you can click on the Startup Settings tab from the Advanced options list. When the Startup Settings window opens, you can click on the F7 button as Disable driver signature enforcement. Now you can see the Restart button, click on it. After restarting your PC, you can see whether the problem will be solved.

Solution 2 – Perform the System File Checker Tool

System File Checker tool is one of the most powerful tools for Windows system. With the help of this tool, you can quickly get solved the stop error 0xc000021a on your computer. To do that follow the steps:

Step 1

Firstly, you need to type “cmd” in the Search Panel and right click on the search result to launch it. In that list, you can select the Run as administrator option. Alternatively, you can press the Windows Home button and X key to open the Menu list and then choose the Command Prompt(Admin) application.

Step 2

When the Command Prompt window opens, you can type SFC/scannow command and then press the Enter button to run this command. After that, you need to wait for a few seconds to scan your computer. Once the command is executed, you can see the system will restart automatically.

Solution 3 – Turn Off Windows Services

By turning off the Windows services you can resolve the error 0xc000021a on the device. Sometimes, if the Windows services are turned on then you can see this error code on the screen. So, you have to disable the Windows services. To do so follow the directions:

Step 1

First of all, you have to press the Windows button + R key to launch the Run box. Type msconfig in the Run box and then select the OK button or hit the Enter key. Alternatively, you should type “System Configuration” in the Search Panel and then, press the Enter button from the keyword.

Step 2

When the System Configuration window opens, you need to take the mouse to the Services tab and then mark the Hide all Microsoft services button. After that, you need to select the Disable all option and then click on the Apply button to save it.

Step 3

Next, you can go to the Startup section and then select the Open Task Manager option to launch the Task Manager window. From the Task Manager window, you can select all the services one by one and then click on the Disable button. After doing this, you can again go to the System Configuration window and then select the OK option. Once you are done, you can simply restart the system and then check if the problem still persists or not.

Solution 4 – Update the Operating System

By updating the Operating System you can also fix the error 0xc000021a on your computer. Sometimes, an older version of the Operating System can cause this error code. So immediately you have to update the system. To finish the steps you need to follow the steps cited below:

Step 1

In the beginning, you have to hold down the Windows button and press the I key to open the Settings application. Alternatively, you can get the Settings application from the Windows Menu list by right-clicking on the Windows button.

Step 2

From the Settings application, you have to move the cursor to the Update and Security section, double click on it. In the Update and Security tab, you can select the Update tab from the left side panel.

Step 3

When the Update page opens, you need to get a button Check for Updates, click on it. Now the Windows system will check if the update is available or not. If you find the update then you can get a button Update, click on it. Once the update process is completed, reboot the device and then check if the Windows system works perfectly without any issue.

Solution 5 – Uninstall Newly Installed Applications

Another solution that we have shared to fix the error 0xc000021a on your computer. When you install the new software on your PC then you can see this error on the screen. So, you should remove it from your computer. In order to fix this particular issue following the steps:

Step 1

You can select the Start button to open the Sraer Menu list and then select the Control Panel application. Alternatively, you need to open the Run box by pressing the Windows Home button and R key together. In the Run box, type Control Panel and then press the Enter button or click on the OK option.

Step 2

When the Control Panel window opens, you need to find the Programs and Features section and then click on the Uninstall Program option. Now you can see the Uninstall Program list will appear. In that list, you can find newly installed applications, right click on it. After that, you can see the button Uninstall, click on it to remove that application.

Solution 6 – Check the HDD Health

The HDD is the main cause for the issue of  0xc000021a on your PC. So you have to resolve this issue as soon as possible. Follow the steps given below:

Step 1

Firstly, you should launch This PC, by double-clicking on This PC. In the This PC window, you can right click on the Local Disk C to launch the list and then click on the Properties button.

Step 2

In the Local Disk C Properties window, you need to take the mouse to the Tools tab. From the Tools section, you can see the button Check, click on it. Now you can see the scanning process has begun. You need to wait for a few minutes to complete the scanning process. Once it gets finished, reboot the system.

Solution 7 – Update the Driver

By updating the driver, you can also resolve the error 0xc000021a on your PC. So you have to update driver immediately to fix this problem. Follow the directions:

Step 1

In the beginning, you can press the Windows button and along with the R key to open the Run dialog box, type Device Manager and then press the Enter button or click on the OK option

Alternatively, you can press together the Win + X buttons to open the WinX menu list and then select the Device Manager application.

Step 2

When the Device Manager window, you need to locate the Display Adapters section which you find at the left side menu list, click on it to expand it. After that, you can see the Driver, right-click on it. Then you can select  Update Software Driver button to update the driver. Once this update is completed, you must restart your PC.

Solution 8 – Trying the DISM Tool

You can also use the DISM tool to get rid of the error 0xc000021a on the system. DISM tool is also a Windows inbuilt tool. Users have reported that with this tool they can fix this issue on your PC. Follow the steps given below:

Step 1

Firstly, you need to press the Windows key + S button to launch the Search box, type cmd and then right click on the search result. Then you can select the Run as administrator button. Alternatively, you have to right click on the Start button to launch the WinX menu list and then you can see an option Command Prompt (Admin).

Step 2

You have to type the following command in the Command Prompt and then hit the Enter key.

                     DISM /Online /Cleanup-Image /RestoreHealth

Step 3

Now you can see the process has begun. Once it is done, you should reboot the device and then check if your computer works properly without any hassle.

Solution 9 – Reset the System’s BIOS

By resetting the system BIOS, you can also fix this issue on your computer. The BIOS on the computer can be reset by simply removing the CMOS battery from the motherboard for a few minutes. But for laptops, this trick doesn’t work because the motherboard isn’t easily accessible. To complete this solution, you need to follow the under mentioned steps:

Step 1

Firstly, you must switch off your computer. After that, you have to disconnect all the cables which are connected to the computer at this moment. Then you can pry launch the system’s chassis.

Step 2

Next, you will find the system’s CMOS battery which is present Motherboard and remove it from your computer. After that, you need to wait for few minutes and then again insert the CMOS battery. After doing this, you have to insert the system’s casing back and then start your computer.

Solution 10 – Rebuild BCD

Sometimes, the boot sector is damaged or deleted can cause this error code. If you want to address this, you’ll need to rebuild the Boot Configuration Data and repair boot sector. So, follow down below and go through the underlying steps diligently:

Step 1

Firstly, you have to boot your PC by using the installation disc. You have to put the installation disc into the disc port. After that, you can press any key to boot the system.

Step 2

After booting the system, you can select the language time/format, and keyboard input and then select the ”Next” option. Then you can click on the Repair your computer button.

Step 3

In that section, you can click on the Troubleshoot tab and then select the Advanced Options section. When the Advanced Options window opens, you can see the Command Prompt button, click on it to launch the Command Prompt window. In that window, you can type the following commands and then hit the Enter button after typing each command.   

  • bootrec /FixMbr
  • bootrec /FixBoot
  • bootrec /ScanOs
  • bootrec /RebuildBcd 

Step 4

Once all the commands are executed, you should reboot your computer and then check whether the issue has been fixed or not.

Solution 11 – Perform the System Restore

This solution is also helpful for this issue that you have encountered on your computer is by performing the System Restore. To perform it follow the steps given below:

Step 1

Firstly, you should type the Control Panel in the Search box and then hit the Enter button. Alternatively, you can hold the Windows button and at the same time press the R key to open the Run box. Type Control Panel and then press the Enter button or click on the OK option.

Step 2

When the Control Panel window opens, you can select the System section. In that tab, you can click on the System Protection which is located at the left side menu list.

Step 3

In the System Protection Properties window, you can see an option System Restore, click on it. After that, you can a System Restore Wizard page will open. Read this page and then click on the Next option. After that, you need to choose the Restore point and then select the Next button. Now you can see a confirmation page will open. Select the Finish button and then click on the Yes button to start the process. Once it completes, reboot the device.

We hope, these solutions will be sufficient to fix the error 0xc000021a on the system. You can read this article and carefully follow them to get rid of this error code on your PC. However, if you ever face this issue, then you can also seek help from an expert for better assistance.

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