How to Fix AppIdPolicyEngineApi.dll Missing Error (Solved)

What is AppIdPolicyEngineApi.dll?

AppIdPolicyEngineApi.dll is a Dynamic Link Library file (DLL) used by Windows applications to perform specific functions within the operating system. This particular DLL file is associated with Microsoft Visual C++ Redistributable packages and plays a crucial role in application identification policies.

Why is AppIdPolicyEngineApi.dll missing?

The AppIdPolicyEngineApi.dll file can become corrupted, deleted or missing due to several reasons such as malware infection, accidental deletion during system cleanup, or incompatible software updates.

Step-by-Step Fixes:

Method 1: Reinstall Visual C++ Redistributable

1. Visit the Microsoft Visual C++ Redistributable download center at: https://support.microsoft.com/en-us/topic/the-latest-supported-visual-c-downloads-2647da03-1e5f-4718-8b4d-e7d74fabao59
2. Download the appropriate version for your Windows operating system.
3. Run the downloaded installer and follow the on-screen instructions to reinstall Visual C++ Redistributable.

Method 2: Run SFC /scannow command

4. Press Windows key + X and select ‘Command Prompt (Admin)’ or ‘PowerShell (Admin)’.
5. Type the following command and press Enter:

SFC /scannow

This command will scan your system for missing or corrupted files, including AppIdPolicyEngineApi.dll, and attempt to repair them.

Method 3: Update System Drivers

6. Press the Windows key + X and select ‘Device Manager’ from the menu.
7. Expand the categories to locate the problematic device driver, right-click on it, and select ‘Update Driver’.
8. Choose ‘Search automatically for updated driver software’.

Conclusion

By following these step-by-step fixes, you should be able to resolve the AppIdPolicyEngineApi.dll missing error in your Windows system. If the problem persists, it may be necessary to consult a professional technician for further assistance.