Resolving Kernel Security Check Failure: Windows Update Error 80070BC9

Resolving Kernel Security Check Failure (Windows Update Error 80070BC9)

The "PC ran into a problem" message with the error code "Kernel Security Check Failure" can be a frustrating issue to encounter, especially when attempting to log in or update your computer. This article will provide a detailed explanation of the problem, its causes, and various solutions to help you resolve Windows Update Error 80070BC9.

Understanding Kernel Security Check Failure

The Kernel Security Check Failure error is typically caused by a problem with your computer's memory, drivers, or system files. When this error occurs, your system is unable to complete the necessary security checks, resulting in the Blue Screen of Death (BSOD) or the error message "PC ran into a problem."

Identifying the Cause

To identify the cause of the Kernel Security Check Failure error, you can check the memory dump file generated during the crash. This file contains valuable information about the state of your system at the time of the crash. To access the memory dump file, follow these steps:

1. Press Win + R to open the Run dialog box.
2. Type viewer.exe and press Enter to open the Windows Memory Diagnostic Tool.
3. Select Restart now and check for problems (recommended) and wait for your system to reboot.
4. Once your system has restarted, the memory diagnostic tool will scan your system for issues. After the scan is complete, your system will reboot again, and you can access the results of the scan.

Resolving Windows Update Error 80070BC9

Now that you have identified the cause of the Kernel Security Check Failure error, you can take steps to resolve Windows Update Error 80070BC9. Here are some possible solutions:

1. Update your drivers

Outdated or corrupted drivers can cause the Kernel Security Check Failure error. To update your drivers, follow these steps:

1. Press Win + X and select Device Manager from the menu.
2. Expand the category of the device you want to update.
3. Right-click on the device and select Update driver.
4. Select Search automatically for updated driver software and follow the prompts to install the update.

2. Run a system file check

Corrupted system files can also cause the Kernel Security Check Failure error. To run a system file check, follow these steps:

1. Press Win + X and select Command Prompt (Admin) or PowerShell (Admin).
2. Type sfc /scannow and press Enter.
3. Wait for the scan to complete and follow the prompts to repair any corrupted files.

3. Check for memory issues

Memory issues can also cause the Kernel Security Check Failure error. To check for memory issues, follow these steps:

1. Press Win + R and type mdsched.exe.
2. Select Restart now and check for problems (recommended).
3. Wait for the memory diagnostic tool to complete the scan and follow the prompts to repair any issues.

References

• Bug Check 0x139: KERNEL_SECURITY_CHECK_FAILURE
• How to use the Windows Memory Diagnostic tool to analyze PC memory problems
• How to Fix Kernel Security Check Failure on Windows 10

The Kernel Security Check Failure error can be caused by a variety of issues, including memory problems, outdated drivers, or corrupted system files. To resolve Windows Update Error 80070BC9, you can update your drivers, run a system file check, or check for memory issues. By following the steps outlined in this article, you can help ensure that your system is running smoothly and securely.