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Fix: Kmode exception not handled in Windows 11

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  • 7 min read

Kmode exception not handled in Windows 11 indicates that a kernel-mode program generated an exceptional error that the handler did not catch.

It usually happens when a system element, such as a device driver, overwrites the memory of another element.

When this error happens, you may not be able to boot Windows 11 or the PC normally might restart abruptly. Moreover, the system stability and performance are also affected.

Fortunately, there are a few ways by which you can fix the error. In this article, we’ll discuss some effective methods to fix the kmode exception not handled in Windows 11 error.

What causes the Kmode exception handled in Windows 11 error?

Here is a list of the most probable causes for the Kmode exception handled error in Windows 11:

  • Faulty or outdated device driver: If a device driver is corrupted, faulty or outdated, your PC’s hardware components can’t communicate with the operating system. Whether it’s the graphics card drivers or the network card drivers, any minor fault in these drivers will result in the kmode exception handled error.
  • Faulty RAM module: Another possible cause of this error is a faulty RAM module, a hard disk failure or overheating of the CPU.
  • Software-related issues: Several software-related issues such as a virus infection, a system file corruption, or a registry error can cause this error.

Also read: Why is there an exclamation mark on C drive in Windows 11?

How to fix Kmode exception not handled in Windows 11 error?

Now that we have understood the causes of the error, let us head to the fixes.

Disable Fast Startup

Fast startup is a feature that speeds up the boot process of Windows 11 by saving some system information to a file when you shut down your computer. However, this feature can also cause problems, such as this one. Thus, disabling this feature may help in solving many errors.

Head to this article to know how to disable Fast Startup easily.

Update the drivers

If you know which driver is causing the problem, you can go to the Device Manager and update it asap. But most of the time, you will have no idea which driver is causing the error. In this case, you can update general drivers like the graphics card driver, network card drivers, sound card drivers, USB drivers, Bluetooth drivers, Webcam drivers, and printer drivers.

All the drivers can be updated from the Device Manager. Here’s an example of how to update the network driver on Windows. You can follow the same steps to update other drivers.

Step 1: Press Windows + X key and click on the Device Manager in the dropdown menu.

Step 2: In the device manager, double-click on the network adapter to expand it and right-click on your WiFi or Ethernet adapter and then click on the Update driver option in the dropdown menu.

Step 3: Click on Search automatically for drivers and Windows will find and install any available updates. 

Read this article to update the Nvidia Graphics card driver.

Run SFC scan

SFC scan, also known as System File Checker scan, is a built-in Windows utility that is designed to scan and repair corrupted or damaged system files.

Here’s how to perform an SFC scan:

Step 1: Press the Windows key + X and then select Terminal.

Step 2: Type sfc /scannow to scan your system. 

Step 3: If the SFC scan finds any problems, use the following command to resolve them:

DISM /Online /Cleanup-Image /RestoreHealth

Run Windows Memory Diagnostic

You can run Windows Memory Diagnostic to identify and resolve memory-related issues that may be causing errors or system instability.

Search Windows Memory Diagnostic on the taskbar search space and then click on the software to open it. You will see two options:

  • Restart now and check for problems: This option lets you immediately run the memory diagnostic tool on your next system startup. Save any unsaved work before selecting this option, as your computer will restart.
  • Check for problems the next time I start my computer: This option lets you schedule the memory diagnostics to run during the next system startup.

After you have done the Windows Memory Diagnostic run, see if it solves the Kmode exception not handled in Windows 11.

Run a malware scan

You can download any standard anti-virus on your computer and perform a quick or detailed scan to detect any malicious programs. This will certainly fix the Kmode exception not handled in Windows 11.

Windows also provide an in-built virus detection software. Type Windows Security in the taskbar search space and then click on the software. Here, select Virus and threat protection and then run a full scan.

Run Check Disk

Check Disk (CHKDSK) is another built-in tool that scans your disk drives and fixes any errors or bad sectors. This can help fix the Kmode exception not handled error in Windows 11.

Check out our detailed article on how to run Check Disk.

Also read: Fix: Irql_Not_Less_Or_Equal error in Windows 11

Update Windows OS

Updating Windows OS is crucial for several reasons including security enhancements, bug fixes, and compatibility with new software and hardware.

To update Windows, go to Settings > Windows Update > Check for updates.

Restore your system

If none of the above methods works, you can try restoring your system to a previous point when it worked fine. This can undo any changes that may have caused the Kmode exception not handled error.

Press the Windows key + R to open the Run box. Here, type rstrui.exe to open the System Restore window. Click on Next to select a restore point.

Wait for the process to complete.

How to prevent the Kmode exception not handled in Windows 11 error?

To prevent the Kmode exception not handled error from happening again, you should keep your device drivers updated and avoid installing incompatible or corrupted drivers.

You should also scan your PC regularly for viruses and malware, and use a reliable registry cleaner to fix any registry errors. Moreover, you should maintain your hardware devices and keep them clean and cool.

We hope this article has helped you fix the Kmode exception not handled error in Windows 11.

Also read: How much space does Windows 11 take?

Kumar Hemant

Kumar Hemant

Deputy Editor at Candid.Technology. Hemant writes at the intersection of tech and culture and has a keen interest in science, social issues and international relations. You can contact him here: