0

How to Fix APC_INDEX_MISMATCH Error on Windows 11?

After several months’ running of Windows 11 system, system errors are arising although Microsoft is striving to release Windows 11 update versions to fix them according to the Insiders’ feedback. The most recent system error which are annoying the users is the APC_INDEX_MISMATCH Windows 11 error.

In this article, we’re willing to show you what The APC_INDEX_MISMATCH Windows 11 error is, why this error happens and how to fix The APC_INDEX_MISMATCH Windows 11 error.

What is APC_INDEX_MISMATCH Error on Windows 11?

APC_INDEX_MISMATCH blue screen of death error (BSOD) or green screen of death error (GSOD) on Windows 11/10 is caused by incompatible drivers or faulty hardware, and it may result in forcing your computer to restart or crashing Windows 11/10. The name of the file usually will be shown in the error message, including win32k.sys, vdmp.sys, wdf01000.sys, fltmgr.sys, and ntoskrnl.sys.

How to Fix APC_INDEX_MISMATCH Error on Windows 11?[7 Fixes]

As we know the APC_INDEX_MISMATCH Error on Windows 11 is caused by incompatible drivers or faulty hardware, we can find out the solutions to help you out.

Solution 1: Update Device Drivers

  1. Right click Start icon and choose Device Manager;
  2. Locate the most important drivers one by one, and right-click on it to select Update driver;
  3. Select the Search automatically for updated driver software and then Windows 11 will automatically search for the driver and update it for you;
  4. Restart your computer to check whether the problem have been fixed or not.

Solution 2: Update Windows 11 to the Latest Version

  1. Click on Start icon and choose Settings;
  2. Locate Windows update on the left;
  3. Click Install Now to install all the Windows 11 updates; or you can click Check updates to scan for the latest versions once you didn’t see any updates showing for you;
  4. Restart you computer after Windows 11 update.

Solution 3: Disable Realtek HD Audio Manager from Startup

The boot process would be affected by the startup programs and then result in the APC Index Mismatch BSOD error. Therefore, we can try to disable certain start up program to fix the APC_INDEX_MISMATCH Error on Windows 11.

  1. Right click on Start icon and choose Task Manger;
  2. Select Startup tab;
  3. Navigate to the Realtek HD Audio Manager;
  4. Right click on it and choose disable;
  5. Restart your computer
Disable Realtek HD Audio Manager from Startup

Solution 3: Check System Files With SFC (System File Checker)

System File Checker (SFC), along with Deployment Image Servicing and Management (DISM) can scan and repair system files to resolve most of the operating system issue, including the APC_INDEX_MISMATCH Error on Windows 11.

  1. Right click the Start icon and select Windows PowerShell (Admin);
  2. Enter DISM /online /cleanup-image /restorehealth in the command prompt to scan the system image file issue;
  3. After the scan is complete, enter fc /scannow in the command prompt to scan and repair system files;
  4. After all the processes are complete, and restart our computer.

Solution 5: Deploy a BSOD troubleshooter with Restoro

A third-party tool Restoro can detect and fix the BSOD error caused by damaged registries, damaged DLLs, driver issues, and hardware trouble.

  1. Download Restoro and install;
  2. Launch it after installation and it will identify corrupted files and other stability issues;
  3. Just repair the issues with Restoro.
Deploy a BSOD troubleshooter with Restoro

Solution 6: Uninstall The DisplayLink Driver

If you are using multiple screen displays connected to a single computer, you need the DisplayLink software, but the drivers are not fully compatible with Windows 11/10, and then you may get the APC index mismatch BSOD error. Therefore, uninstall it will help you to fix the error. You can directly uninstall from Windows 11 Control Panel or uninstall it completely by deleting its leftovers with IObit Uninstaller.

Solution 7: Change Your RAM Frequency

This method is not recommended for the users who are not familiar with the system, as it is a advanced option and might cause the system error if you can not perform it in the right way.

Over-locking CPU, GPU, or RAM on your device is not recommened, but you can try to increase or decrease the RAM, CPU, or GPU frequencies.

The above 7 methods may have help you fix the APC_INDEX_MISMATCH Error on Windows 11 / 10. But we will constantly update this article for freshness and accuracy. And as you know the BSOD errors are troublesome and could be caused by many reasons, such as inserting the unknown device, startup apps, interfering software, DisplayLink drivers, incompatible system drivers, virtualization, missing system files or DLLs, etc. Please take care whenever you would like to do some changes to your computer.

Frances

Leave a Reply