1. Windows Update Error

Fix Windows Stop Code 0xC000021A Blue Screen Error

Microsoft regularly releases updates for Windows to fix bugs and address issues from the previous version. However, the more recent version can contain additional flaws and unfavorable issues for consumers. Windows Stop Code 0xC000021A is among the most frequent and annoying issues across versions.

8 Solutions Windows Stop Code 0xC000021A

A user finds it difficult to start their gadget and use it for their intended purposes due to this problem. Additionally, a lot of individuals who wish to complete their jobs fast now face a barrier due to this issue. Do you wish to discover the ideal solutions to this issue? You will learn eight solutions to this error from this guide.

What is BSOD Error 0xC000021A in Windows 10?

Common errors such as halt codes and death errors go under the label 0xC000021A. Your computer will display a blue “death screen” with this error message and a message stating that it must restart. This signifies that the system has identified an issue with your device that needs to be resolved.

Instead of being exclusive to any one version, this Windows problem occurs in all versions. Regardless of the version you are using, you might have encountered this issue. The important query, though, is why this problem happens in every system. To help you understand this inaccuracy, let us provide you with a few justifications.

  • involvement of any affected program or software.
  • improper third-party applications.
  • system registry damage
  • Library loading is not complete.

There are undoubtedly a variety of other causes for the Windows stop code 0xC000021A. But they are thought to be the most typical reasons for this issue. Now that the fault has been fixed, it is time to understand how to maintain smooth device operation.

How to Fix Error 0xC000021A Before Recovering Data

We advise adding recovery software before attempting to fix this Windows step issue or any other error. You frequently lose your data when attempting to fix such issues. The easiest approach to ensuring that you will be able to recover your data in the event of a loss is to add software before resolving any issues.

EaseUS Data Recovery Wizard WinPE Edition is one of the best apps we recommend. You can recover your data regardless of the Windows version you are running. All Windows versions can use the functional interface that was created for this product.

This program has several features in addition to flexible compatibility. You can take advantage of exceptional capabilities that might not be offered by any other data recovery program. Let’s quickly review some of its best attributes.

  • Within a few minutes, this software will recover erased files. Because of the algorithm’s quick processing, it won’t take very long.
  • This tool will never have an impact on your data. Your files will be restored in their original format without being overwritten.
  • You won’t ever be prompted to restart or reinstall Windows.
  • The user interface of this data recovery program is straightforward.

We advise using EaseUS Data Recovery Wizard WinPE due to its sophisticated capabilities. This product will never let you down when it comes to restoring your deleted data.

Step 1: Make a bootable CD.

Create a blank USB. Copy the data to another device if it contains vital information. The information on the USB will be deleted when you make a bootable disc. With the help of EaseUS Data Recovery Wizard WinPE Edition, you can create a bootable disc.

Launch the EaseUS Data Recovery Wizard WinPE Edition after connecting the USB device to the PC. To build a bootable disc, choose the USB device and click “Create.”

Step 2: Start the bootable USB device.

Change your computer’s boot sequence in the BIOS by connecting the bootable disc to a PC that won’t boot. Most customers find that restarting their computer while simultaneously pressing F2 to access the BIOS works great.

Choose “Removable Devices” (a bootable USB disc) or “CD-ROM Drive” (a bootable CD or DVD) to start the computer instead of the hard drive. To save and leave, press “F10.”

Step 3: Recover data from a non-booting hard disc

EaseUS Data Recovery Wizard can be launched from the WinPE bootable disc when you start the computer from the USB. Choose the drive you wish to search for all your missing data on.

  • To begin the scanning process, click “Scan.”
  • Recover information from the laptop or PC. You can examine all recoverable files after the scan is finished, choose the desired files, and then click “Recover” to get your files back. To prevent data overwriting, you should store all the retrieved data in a different location.

8 Best Fixes: Windows Stop Code 0xC000021A

You should now have a better understanding of what causes Windows 10 BSOD code 0xC000021A after reading the topic above. Here, we’ll go through some of the most effective solutions for fixing this problem. Remember that not every solution will be effective for you. The following remedies might need to be tried repeatedly until you find the one that works for you.

By viewing this video instruction, you can also obtain a general concept of how to fix this mistake. The entire procedure has been covered in detail in this video.

0:25 Fix the system file and MBR

1:25 Fix BCD error

Method 1: Unplug or disconnect all external devices.

As was already indicated, external device interference is a frequent cause of this problem. Therefore, you should try to resolve this issue by sequentially unplugging all external devices. The best course of action is to examine each device carefully and keep unplugging or disconnecting it.

They should require you to unplug them and restart your device repeatedly. If the issue has been fixed, it indicates that an external device is to blame. Try the following solutions again if Windows stop error 0xC000021A is still shown on your device.

Method 2: Fix installation-related corrupted system files

Repairing the system’s damaged files is a further efficient technique to get rid of the blue screen of death issue. The procedure is straightforward and can be completed by following clear procedures. The section after this one contains our discussion on them.

To boot from a Windows media creation tool, you must create one. then take the actions listed below:

1: Decide on your preferred language. Click “Repair Your Computer” after that.

2: Select the advanced options after clicking “Troubleshoot.” the “Command Prompt” button.

3: Type “chkdsk C: /r” into the Command Prompt when it appears and hit Enter.

4: Type sfc/scannow and press the Enter key.

Don’t forget to restart your system once you’ve finished the steps. By doing this, you’ll give your computer a chance to stabilize its operating system and notify you if the error has been fixed or not.

Method 3: Repair the BSOD Error by Updating Device Drivers

The majority of people have the tendency to overlook device driver updates. Users frequently fail to update their drivers, which can result in both this and other errors. To fix this issue, consider updating your device drivers. Here are the actions you can take to accomplish this:

  1. Start Windows 10 in Safe Mode.
  2. Use the menu bar that appears when you right-click the start button.
  3. From the list of options, select Device Manager.
  4. Double-click the device choice to bring up a new window of a smaller size.
  5. Next, select Update Driver from the Driver menu in the menu bar.
  6. Select “Automatically search for driver software.”
  7. Select the Update option found at the bottom of the new window.

It will begin updating your device’s out-of-date drivers so that they are updated. It’s conceivable that error 0xC000021A has been fixed and your system will resume functioning normally.

Method 4 to Fix Code 0xC000021A: Rebuild the Boot Configuration Data (BCD).

If you have this error with Windows 10, BCD may be at blame (Boot Configuration Data). The reason is because it initiates Windows 10 activities. You might be able to correct this and fix this issue. Leave the creative media alone and carry out the instructions listed below.

Step 1: Select the Troubleshoot option. Look for “Command Prompt” after Advanced Options.

Step 2: In the Command Prompt, enter the following command:

restart or repairmbr

repairboot in bootrec

These procedures can be used to fix Windows 10 BSOD error code 0xC00021A. The reason is that it will completely rebuild your Windows settings.

Disable the Driver Signature Enforcement Feature using method 5.

Software that is not digitally signed is often downloaded and installed by consumers. The operation of such applications or programmes is constrained by this particular driver. It may also display this error, which your smartphone will begin to display repeatedly. Therefore, in order to disable this driver, you must take the following actions:

Press F8 or F11 repeatedly after turning on your computer.

Utilize the recovery option by booting in this manner. Startup Settings > Troubleshoot > Advanced Options > Restart

Press F7 one more time to remove this driver and restart your computer.

It’s conceivable that doing this will fix Windows stop error 0xC000021A. The rationale is that it is thought to be the primary cause of this mistake.

Reset the BIOS to fix the error code 0xC000021A.

This error can be fixed, and additional issues can be avoided by performing a BIOS reset. You should have to reset the device’s BIOS to be safe. Let us illustrate a few points for you.

Step 1: Locate and choose UEFI Firmware Settings from the troubleshooting menu.

Step 2: Press the Restart button once to access the BIOS.

  1. To complete this job, locate the “Reset Configuration Data” option.
  1. Save the updated settings, then restart your computer to ensure seamless operation.

You only need to follow these simple steps to reset your device’s operating system and protect your data from illegal access.

7. Use a system restore to fix error code 0xC000021A.

A more efficient method to fix Windows 10 BSOD error 0xC000021A is to run a system restore. To determine if the mistake had been fixed or not, you ought to have restored the system. The procedures to safely recover the system are listed below.

Go to Advanced Startup and search for “System Restore” in Step 1.

Step 2: Pick a restore point for your system.

Step 3 : Press the Next button and adhere to the on-screen directions.

If you are unfamiliar with this procedure, don’t worry; the on-screen directions will be easy to understand. If you read them once, you can follow them without needing to hunt for video lessons.

Method 8 to Fix Windows Stop Code 0xC000021A: Reinstall Windows 10

The final option you have if none of the repairs work is to reinstall Windows 10. You will be able to settle all the OS-related files on your device by doing this. Additionally, with this installation, you will be able to install the upgraded device on your device. You must carry out these actions to achieve it.

  • Put a CD or DVD in or connect a USB for this installation.
  • Select “Create USB installation media for another PC.”
  • You must now adhere to the directions displayed on the screen to install the new version of Windows.


All the techniques you can use to fix Windows stop code 0xC000021A have been thoroughly covered in the blog post above. To get your gadget in working order, you only need to implement each of these methods one at a time.

Remember that you shouldn’t stop the process until the ideal solution has been identified. It’s probable that you’ll need to try more than one remedy before you locate the appropriate one. If you want to take windows help from our assistance you can connect it 1-855-400-7767

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