Kernel Security Check Failure: How we fixed this error

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
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  • The Kernel Security Check Failure is a sub-type of BSoD error.
  • The article below will show you how to deal with this particular BSoD.
  • If you want to read more on the matter visit our dedicated BSoD page.
  • While you're at it, you may also want to visit our Windows 10 Errors page.
fix Kernel Security Check Failure errors

5. Update your PC

Make sure that you’re running the latest Windows OS updates on your machine. As a quick reminder, Microsoft constantly rolls out Windows updates to improve the system’s stability and fix various issues.

To access the Windows Update section, you can simply type “update” in the search box. This method works on all Windows versions. Then go to Windows Update, check for updates and install the available updates.

Kernel Security Check Failure fix



6. Scan your PC

Run a full system scan to detect and remove any virus or malware that potentially sneaked into your PC. Malware may cause various issues on your computer, including the Kernel Security Check Failure error.

Perform a full system scan to detect any malware running on your computer. You can use Windows’ built-in antivirus, Windows Defender, or third-party antivirus solutions.

We recommend Bitdefender – rated as Nr. 1 world’s best Antivirus it will find all the malware on your PC and completely eliminate the threats.

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Here’s how to run a full system scan on Windows 10:

  1. Go to Start > type ‘defender’ > double click Windows Defender to launch the tool
  2. In the left-hand pane, select the shield iconKernel Security Check Failure fix
  3. In the new window, click the Advanced scan optionKernel Security Check Failure fix
  4. Check the full scan option to launch a full system malware scan.

If the antivirus cannot remove the malware it detected, first you should try installing a different antivirus to see if it works.

If it does not, then you will most likely have to restore your operating system to a point where you did not have this issue or completely reinstall the operating system.

7. Check your disk for errors

  1. On Windows 10, you can run a disk check using Command Prompt.
  2. Start Command Prompt as administrator and type the chkdsk C: /f command followed by Enter. Replace C with the letter of your hard drive partition.
  3. As a quick reminder, if you do not use the /f parameter, chkdsk displays a message that the file needs to be fixed, but it does not fix any errors.
    1. The chkdsk D: /f command detects and repairs logical issues affecting your drive.
  4. To repair physical issues, run the /r parameter as well.

command prompt chkdsk

This process can be time-consuming. Depending on the hard drive’s memory, it can go between half an hour and two hours before it is done.

This guide will help you become an expert on repairing hard drive errors!

8. Kernel Security Check Failure after overclock

If you overclocked your PC, this may explain why you’re experiencing Kernel Security Check Failure errors. Revert your PC to its default configuration and uninstall any overclocking software running on it. Then restart your device to see if the error persists.

9. Run System Restore

  1. If the problem started recently, run System Restore.
    • If this issue occurred after you installed new software on your computer, this tool helps you to remove recently added apps and programs.
  2. Windows 10 offers a series of advanced recovery option that allows users to clean install the OS.
    • You can also use ‘Reset this PC’ recovery option.
  3. Go to Settings > Update & Security > click on Recovery under the left pane.
  4. Click on Get Started under Reset this PC > choose to Keep your files.PC recovery Follow the on-screen instructions to complete the reset.

System Restore fails to extract the original copy? Learn how to solve the issue with this guide!

10. Run Safe Mode

  1. If you don’t want to reset your computer, you can try to boot your computer in Safe Mode in order to identify if there are any apps or software that are causing this problem.
  2. For a step-by-step guide on how to enable Safe Mode,  read our complete guide.
  3. If the problem doesn’t occur in Safe Mode, this indicates the problem is indeed triggered by an app or software.
  4. Enable your programs one by one to identify the culprit. Once you’ve done that, you can uninstall the problematic software.
  5. The steps above showed you how to fix the “Kernel Security Check failure” error message on your Windows 10 PC.
  6. If there is a hardware failure of the HDD or the RAM in your device, you will most likely have to replace it with a new one.

Save your computer with one of these hardware diagnostic tools for Windows 10!

If you have any additional questions regarding this subject, please don’t hesitate to write us in the comments section below and we will help you further as soon as possible.

Editor’s Note: This post was originally published in October 2017 and has been since revamped and updated in March 2020 for freshness, accuracy, and comprehensiveness.

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