Fix “Autopilot.dll WIL error was reported 0x80070491” in Windows 11 or 10

Antonia Zivcic

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Windows 11 and 10 are powerful operating systems that bring a myriad of features and functionalities to users worldwide. However, like any complex software, they are not immune to errors and glitches. One such issue that users may encounter is the “Autopilot.dll WIL error 0x80070491.” This error can be frustrating and may hinder the smooth operation of your system. In this article, we will explore the possible causes of this error and provide step-by-step solutions to help you resolve it.

Understanding the Autopilot.dll WIL Error

Understanding the Autopilot.dll WIL Error

The Autopilot.dll WIL error, accompanied by the error code 0x80070491, often occurs when users attempt to perform certain actions or install updates on their Windows 11 or 10 systems. This error is related to the Autopilot.dll file, which is a dynamic link library file responsible for the functioning of Windows Autopilot – a feature that facilitates device provisioning and deployment.

Possible Causes of the Autopilot.dll WIL Error

1. Corrupted Autopilot.dll File

   The most common cause of the error is a corrupted or damaged Autopilot.dll file. This can happen due to various reasons, such as sudden system crashes, interrupted updates, or malware infections.

2. Outdated or Incompatible Drivers

   If your system has outdated or incompatible drivers, it can lead to conflicts and trigger the Autopilot.dll WIL error. Keeping your drivers up-to-date is crucial for the overall stability and performance of your system.

3. Windows Update Issues

   Problems with Windows updates can also contribute to the Autopilot.dll WIL error. Failed or incomplete updates may leave your system in an inconsistent state, leading to various errors, including the one under discussion.

4. Malware or Virus Infections

   Malicious software can corrupt system files, including Autopilot.dll. Regular scans and a robust antivirus program are essential to prevent and eliminate such infections.

Solutions to Fix the Autopilot.dll WIL Error

Now that we understand the potential causes of the Autopilot.dll WIL error, let’s explore step-by-step solutions to resolve this issue:

1. Run System File Checker (SFC)

   The System File Checker is a built-in Windows tool that can scan and repair corrupted system files. To use SFC, open Command Prompt as an administrator and type the following command:


   sfc /scannow


   Allow the scan to complete, and if any issues are found, SFC will attempt to repair them.

2. Update Drivers

   Ensure that all your device drivers are up-to-date. You can manually update them through the Device Manager or use third-party driver updater tools. Be cautious and download drivers only from reputable sources or the official website of the device manufacturer.

3. Check Windows Update

   Ensure that your Windows operating system is up-to-date. Go to Settings > Update & Security > Windows Update and click on “Check for updates.” Install any pending updates and restart your system.

4. Perform a Malware Scan

   Use a reliable antivirus or anti-malware program to scan your system for any malicious software. Remove any threats detected during the scan.

5. Reinstall Autopilot.dll

   If the Autopilot.dll file is corrupted, you can try reinstalling it. To do this, you may need to extract a fresh copy of the file from your Windows installation media or download it from a reliable source.

6. Perform a System Restore

   If the issue started after a recent system change, you can perform a system restore to revert your system to a previous state. This can be done by typing “create a restore point” in the Windows search bar, selecting the “System Restore” option, and following the on-screen instructions.


The Autopilot.dll WIL error with the error code 0x80070491 can be a frustrating roadblock, but with the right troubleshooting steps, you can resolve the issue and restore your system’s functionality. Remember to follow each solution carefully and create backups of your important data before making any significant changes to your system. If the problem persists, seeking assistance from Microsoft support or community forums may provide additional insights tailored to your specific situation. Regular maintenance, updates, and a proactive approach to system health can go a long way in preventing such errors in the future.

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