How to fix Kernel Security Check Failure in Windows 11

If your computer has Windows 10 or 8.1, this will be good news for you! Microsoft released the latest update to Windows kernel. In order to become more secure, it is important that users check their computers and make sure they are fully updated with all security patches from Microsoft available on March 20th (Patch Tuesday).

The “kernel security check failure windows 10 2021” is an error that has been present in Windows for a while. The error occurs when the kernel tries to access the pages of memory. This can be fixed by changing the permissions on the page file.

Loredana Harsana (Loredana Harsana)

Expert in Windows and Software

Loredana is a dedicated writer who is fascinated by computer software and technology. She began blogging about smartphones when the Samsung Galaxy S II was the most popular device on the market, and… Read more

  • Kernel Security Check Failure is a very frequent BSOD that may be fixed quickly.
  • Outdated drivers and faulty system files are the most common reasons of the error message.
  • Even though they’re inconvenient, BSOD problems are simple to resolve with the correct tools. Updating Windows often helps in this respect.


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Some customers have reported seeing the Kernel Security Check Failure warning message on the BSOD screen and have asked for help in addressing the problem.

In order to better complement the concept of Windows 11, Microsoft has replaced the blue backdrop in BSOD (Blue Screen of Death) issues with a black background.

This does not seem to have any substantial influence on performance or the frequency with which the problem occurs, which appears to remain virtually unaltered for the great majority of users, which is in accordance with expectations.

We’ve put up a list of options for resolving the Kernel Security Check Failure issue you’re having, but first, let’s look at the major reasons.

What causes a failure of the Kernel Security Check?

It is vital to have a comprehensive grasp of the elements that created an issue while troubleshooting it.

As a result, we’ve highlighted some of the most common reasons of Kernel Security Check Failure:

Corrupted system files – Even Microsoft makes errors now and again, delivering faulty updates that cause the system to crash without the user’s knowledge or agreement. Hardware that is incompatible with or malfunctioning — Unseated hard drives, RAM chips, or insecure connections may all cause a stop code. If your computer was recently opened, double-check that all hardware components are properly attached. Unplug and then reseat all of these components to be on the safe side. Drivers who are out of date or unsuited for the job – BSOD STOP problems are often caused by obsolete or incompatible application files or device drivers. ➡ Using a version of Windows that is no longer supported – It’s typically a good idea to keep your OS version up to date since new versions may solve flaws you weren’t aware of in the first place. Inadequate RAM – Normally, an 8 GB RAM chip will plenty for your computer, but in certain cases, you may need to expand it.

Incompatible drivers are the most common cause, which is particularly true if you’ve upgraded from a prior version of Windows to Windows 11.

It’s likely that you’re encountering problems because you’re using a driver that worked great in previous versions but not in this one.

When a Blue Screen of Death shows on the screen, the reason of death is typically specified in the STOP Code. These crucial signals highlight the problem’s origin.

More power to you if you can reproduce these problem messages and figure out what’s causing them and how to fix them. However, most of the time, Windows will restart and solve any underlying problems without your assistance.

A check process is usually in place when the Windows operating system is initially powered up. It will produce the Kernel Security Check Failure error message if it detects corruption in any important data structure.

What should I do if the Kernel Security Check fails in Windows 11?

1. Make a Windows update

  1. To launch the Settings app, press the Windows key + I, then choose Windows Update from the left panel.
  2. If you need to download any new updates, click the Install now option and wait for the procedure to complete; otherwise, click the Check for updates button.

Running an older version of Windows might be causing the problem, which can be easily fixed by upgrading the operating system. The problem will most likely be resolved in future iterations.

2. Run the Memory Diagnostic Tool on Windows.

  1. To use the search feature, press Windows key + S, enter Windows Memory Diagnostic, and right-click on the most appropriate result to execute it as administrator.
  2. Allow the Windows Memory Diagnostic to run by selecting the Restart now and check for faults (recommended) option.

If you encounter any barriers along the way, such as a failing hard drive, replace the RAM first before proceeding.

3. Perform an SFC scan.

  1. To enter the Search bar, press Windows + S, then type cmd, then right-click on the most relevant result to execute it as an administrator.
  2. Press Enter after typing or pasting the following command: sfc /scannow sfc /scannow sfc /s

Restart your computer when you’ve completed waiting for the procedure to complete (which may take some time).

4. Run the CheckDisk program.

  1. To activate the search feature, press Windows key + S, enter cmd, then right-click on the most relevant result to execute it as administrator.
  2. Type the following command and hit Enter when the Command Prompt appears: C: chkdsk /f /r /x 

Another option you have is to use Check Disk to look for faulty files. Because it is more thorough than an SFC scan, it takes longer to complete. Once the operation is finished, restart your computer.

5. Drivers must be updated

  1. To launch the Settings app, press the Windows key + I, then choose Update & Security from the left panel, followed by Advanced settings on the right.
  2. Click on Optional updates after scrolling down to the Additional choices section.
  3. Now choose Driver Updates from the drop-down menu, then choose all of the driver updates that appear before clicking the Download & Install button.

Although Windows is usually responsible for driver updates, if you have an issue, you may manually check for updates. A specialist program like DriverFix is highly recommended for automatic scanning of outdated drivers.

Is a BSOD harmful to my computer?

The blue screen of death (BSOD), often known as the stop screen or stop error, is one of the most feared computer errors, second only to malware or ransomware in terms of indicating that a user is in for a bad day.

It happens without warning, and any work that hasn’t been saved is lost forever. And, depending on what it exposes, it’s conceivable that this is the farthest thing from a user’s mind.

In every manner, the answer to our question is a loud no. The purpose of a blue screen of death is to safeguard your computer’s hardware.

When Windows identifies anything that has the potential to do significant damage, it suspends all functions, resulting in the dreaded Blue Screen of Death.

Despite the fact that a BSOD has no effect on your hardware, it may ruin your day. When you’re busy working or playing, everything grinds to a standstill.

You’ll need to restart your computer, then reload any currently open applications or files before returning to work.

Understand how to fix the Kernel Security Check Failure stop code in Windows 10 if you want to learn more about the problem code and the many available solutions.

You may read our post on how to prevent Kernel Security Check Failure errors to avoid dealing with kernel problems in the future.

Kernel debugging is one of the most valuable talents you can have, and to assist you out, we’ve put up a tutorial on how to debug the Windows kernel.

It might take a long time to fix BSOD issues. Please let us know which method works best for you in the comments area below, as well as how often you experience the Blue Screen of Death on your computer.

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Frequently Asked Questions

How do I fix a kernel security check failure?

A: This error is fairly common on Ubuntu machines. It can be fixed by restarting the computer and running a chkdsk /r command in Command prompt

How do I disable kernel security check?

A: There are a few different ways to do so. One way is by deleting your user data, which also removes all of its associated settings and configurations as well. Another way would be by editing the kernel security checks in the /boot folder with a hex editor or any other text-editing tool you may have on hand.

Is kernel security check failure serious?

A: Kernel security checks are very important and failure to perform them can lead to a lot of problems. It is not serious, as long as you have some backups so that if the system becomes unstable again your files will be still safe.

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