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How to fix Kernel Security Check Failure error in Windows 11

07 December 2021, Tuesday By M. Konwar

The appearance of a blue screen of death with the Kernel Security Check Failure error most often indicates that the integrity of files in Windows 11 is violated or some important updates are missing. Less commonly, the problem is related to RAM malfunctions or lack of it.

Next, I will consider all the ways to fix this error. 

On this page

Method 1: Update Windows and Drivers

Method 2: Using a Memory Checker

Method 3: check disk

Method 4: check the integrity of system files

Method 5: configure the Paging File

Kernel Security Check Failure

If the operating system does not load at all, and a corresponding error appears on the screen, download the ISO image from Windows 11, write it to a USB flash drive through any convenient program (you can also use an official one from Microsoft), that is, make a bootable USB flash drive. Run the repair tool through it, open Command Prompt and type sfc /scannow, then press Enter

Method 1: Update Windows and Drivers

Let's start with the simplest method, which does not require doing something super complicated, but it really allows you to avoid the appearance of the Kernel Security Check Failure error with a further OS crash. As part of this method, I will cover the installation of a system and driver update, which must be taken into account when following the next instruction.

1. Open the Start menu and go to Settings.

Windows 11 Settings

2. In the pane on the left, you are interested in the last section - "Windows Update".

Windows 11 update

3. Click on the "Check for Updates" button and install all found updates, including cumulative ones.

Windows 11 Check for updates

4. If there are no updates or after they have been installed, go down in the same window and click on the "Advanced options" tile.

Windows 11 update advance options

5. Select the "Optional Updates" category.

Windows 11 optional updates

6. Check the boxes for all optional updates, including all drivers, and then click on "Download and Install". Restart your computer and watch it work.

Windows 11 install optional updates

Method 2: Using a Memory Checker

In Windows 11, as in previous versions of operating systems, there is a built-in tool for checking RAM. It will find and fix errors, if any. Problems for which there is no solution are most likely hardware-related, in which case switching the RAM stick to a different slot or replacing it will help.

1. Open "Start" and through the search find the application "Windows Memory Diagnostic", and then run it.

Windows Memory Diagnostic

2. Close all processes, save changes in other programs and in a new window click on "Restart now and check for problems".

Windows 11 Restart now and check for problems

3. A window will appear where you will see the testing process. When a list with a choice of modes appears, select "Normal". Upon completion, you will receive a detailed report of the scan and the problems found.

windows memory diagnostic scan

Method 3: check disk

If the error persists after testing the RAM, proceed further. This method is also associated with an automatic checker, but it will affect the hard drive. It does not have a graphical menu, so the launch is carried out through the "Command line".

1. Open the start menu and search for the console. You can use any convenient command line launch method if you know such.

Windows 11 cmd

2. In this case, it is important to run the console exactly as administrator, otherwise the command will not work.

Windows 11 Command Prompt

3. At the Command Prompt, type chkdsk chkdsk C: /f /r /x and press Enter to apply.

Windows 11 run Command Prompt

4. The disk check process begins. If you see information that "Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)," type y and press enter to start the test at the next reboot.

Command Prompt disc check

Method 4: check the integrity of system files

All methods related to checking components have been completed. If they did not help in fixing the Kernel Security Check Failure error, it is worth running an integrity scan of system files. This is also done through the "Command Line" by entering the sfc /scannow command. The analysis will take some time, so do not close the console and watch the progress in the window.

command line

Method 5: configure the Paging File

A rarely discussed issue occurs due to insufficient RAM, however some users claim that after adding RAM, blue screens no longer appear. Let's try to cope with this situation in a workaround by activating the paging file so that there are no problems with RAM.

1. To do this, open the start menu and search for "View Advanced System Settings".

view advanced system settings

2. In the new window in the "Performance" block, click on "Settings".

advance system settings

3. In the new window go to the "Advanced" tab and click change under the virtual memory block.

Windows 11 virtual memory

4. In the new window, if the "Automatically manage paging file size for all drives" option is unchecked, you can select custom size and set the desired initial and maximum allocated size.

Windows 11 custom page file size

We will not dwell in detail on the appropriate amount of virtual memory, since this topic is extensive and requires a detailed description. In short, the paging file should not exceed half the amount of real RAM.

Related: How to fix error 0x80070422 when updating Windows 11

This was all the information on the topic of fixing the blue screen of death with the Kernel Security Check Failure error in Windows 11. If none of the methods worked for you, you should try reinstalling the OS, especially in cases where you initially used an unlicensed version of Windows. 

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