APC Index Mismatch Windows 10

This article provides an in-depth understanding of the APC index mismatch error in Windows 10, its causes, and multiple solutions to resolve the issue effectively.

Nene Aly

By Nene Aly / Updated on March 5, 2024

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Windows 10 is a highly popular operating system used by millions of users worldwide. However, like any other software, it is prone to errors and issues. One such error that Windows 10 users often encounter is the APC index mismatch error. This error can cause system crashes, leading to frustration and inconvenience for users. In this article, we will delve into the APC index mismatch error, its causes, and various solutions to fix it.

Understanding the APC Index Mismatch Error

The APC index mismatch error, also known as the STOP code 0x0000001, is a Windows 10 Blue Screen of Death (BSOD) error. It usually occurs when a driver attempts to access an incorrect address within the kernel-mode code. This error can cause your system to crash, resulting in data loss and interruption to your work.

Causes of the APC Index Mismatch Error

There can be several causes behind the APC index mismatch error in Windows 10. Understanding these causes can help you identify the root issue and apply appropriate solutions. The following are three common causes of the APC index mismatch error:

  1. Outdated or incompatible drivers: One of the primary causes of the APC index mismatch error is outdated or incompatible drivers. When drivers are not updated regularly or are incompatible with your system, they can cause conflicts and trigger this error.
  2. Corrupted system files: Corrupted system files can also lead to the APC index mismatch error. These files are essential for the smooth functioning of your operating system, and when they get damaged or corrupted, various errors may occur.
  3. Hardware issues: Problems with your hardware components, such as faulty RAM or hard drives, can also contribute to the APC index mismatch error. Malfunctioning hardware can disrupt the normal operation of your system and trigger unexpected errors.

Solutions to Fix the APC Index Mismatch Error

Fortunately, several solutions can help you resolve the APC index mismatch error in Windows 10. Follow these steps to fix the issue effectively:

Solution 1: Update or Reinstall Drivers

  1. Identify the problematic driver: Use Windows Device Manager to identify the driver causing the error. Look for any drivers with yellow exclamation marks.
  2. Update the driver: Visit the manufacturer's website to download the latest version of the problematic driver and install it on your system.
  3. Reinstall the driver: If updating the driver doesn't resolve the issue, uninstall the driver from Device Manager and reinstall it.
  4. Restart your system: After updating or reinstalling the driver, restart your computer to apply the changes.
  5. Test your system: Verify if the APC index mismatch error is resolved by using your system normally. If the error persists, proceed to the next solution.

Solution 2: Repair Corrupted System Files

  1. Open Command Prompt as administrator: Right-click on the Start button and select 'Command Prompt (Admin).'
  2. Run System File Checker (SFC) scan: In the Command Prompt window, type 'sfc /scannow' and press Enter. This will scan your system for corrupted files and attempt to repair them.
  3. Wait for the scan to complete: The scan may take some time, so be patient and let it finish.
  4. Restart your system: After the SFC scan is complete, restart your computer and check if the APC index mismatch error is resolved.
  5. If the error persists, try running the Deployment Imaging and Servicing Management (DISM) tool to repair system image files.

Solution 3: Check Hardware Components

  1. Run hardware diagnostics: Use built-in hardware diagnostic tools or third-party software to check the health of your hardware components. Test your RAM, hard drives, and other hardware for any issues.
  2. Replace faulty hardware: If any hardware components are found to be defective, consider replacing them to eliminate the APC index mismatch error.
  3. Consult a professional: If you are unsure about diagnosing or replacing hardware components, it is recommended to consult a professional for assistance.

Recommended Software

Before concluding this article, it is worth mentioning a highly recommended software called Driver Booster. This software helps you update and install all outdated drivers on your system, preventing compatibility issues and reducing the likelihood of encountering the APC index mismatch error in the future. Driver Booster scans your system, identifies outdated drivers, and automatically downloads and installs the latest versions. Its user-friendly interface and extensive driver database make it a reliable choice for maintaining an optimized system.

FAQs about the APC Index Mismatch Error

In this section, we will answer some frequently asked questions about the APC index mismatch error:

Q: How can I prevent the APC index mismatch error from occurring?

A: To prevent the APC index mismatch error, make sure to regularly update your drivers, run regular system scans for malware, and keep your operating system up to date with the latest patches and updates.

Q: Can third-party antivirus software cause the APC index mismatch error?

A: Yes, incompatible or outdated third-party antivirus software can conflict with your system's drivers and cause the APC index mismatch error. Ensure that your antivirus software is compatible with your operating system and regularly update it.

Q: How do I know if the APC index mismatch error is caused by hardware issues?

A: Running hardware diagnostic tests can help you determine if the APC index mismatch error is caused by faulty hardware. Use specialized software or consult a professional for accurate diagnosis.

Q: What other Blue Screen of Death (BSOD) errors are common in Windows 10?

A: Windows 10 users may also encounter errors such as IRQL_NOT_LESS_OR_EQUAL, SYSTEM_SERVICE_EXCEPTION, and KERNEL_SECURITY_CHECK_FAILURE, among others.

Q: Can I use System Restore to fix the APC index mismatch error?

A: Yes, System Restore can potentially fix the APC index mismatch error. It allows you to revert your system to a previous state when it was functioning correctly. However, be cautious as it may remove recently installed programs or updates.

Q: Is it recommended to perform a clean installation of Windows 10 to fix the APC index mismatch error?

A: Performing a clean installation of Windows 10 is a drastic measure that should be considered as a last resort if all other solutions fail. It involves wiping your system and reinstalling Windows from scratch.


Before we conclude, let's quickly understand some tech terms related to the APC index mismatch error:

1. Blue Screen of Death (BSOD)

The Blue Screen of Death (BSOD) is a system error screen that appears on Windows computers when a fatal system error occurs, forcing the system to shut down. It displays diagnostic information and is often accompanied by a unique error code.

2. Driver

A driver is a software component that enables communication between a hardware device and the operating system. It allows the operating system to utilize the features and functionalities of the hardware.

3. RAM (Random Access Memory)

RAM is a type of computer memory that stores data that is actively being used or processed by the CPU. It provides quick access to the data, allowing faster execution of programs.

Tips to Keep Your System Running Smoothly

  • Regularly update your drivers to ensure compatibility and enhanced performance.
  • Run antivirus software to detect and remove any malware or viruses that may affect your system.
  • Perform regular system maintenance tasks such as disk cleanup, defragmentation, and software updates.


The APC index mismatch error is a common problem faced by Windows 10 users. By understanding its causes and implementing the provided solutions, you can effectively resolve this error and prevent its recurrence. Regular system maintenance, driver updates, and hardware checks are crucial for maintaining a stable and optimized Windows 10 system. Following the tips mentioned in this article will help you keep your system running smoothly and minimize the chances of encountering errors such as the APC index mismatch.

Nene Aly
Nene Aly · Editor