Windows 8 Services

Application Compatibility Cache - Windows 8 Service

Cache Compatibility Data and Attributes for Individual PE File.

This service also exists in Windows 10.

Startup Type

Windows 8 edition Windows 8 Windows 8.1 Windows 8.1 Update 1
Core not exists System System
Pro not exists System System
Enterprise not exists System System

Default Properties

Display name:Application Compatibility Cache
Service name:ahcache
Error control:normal

Default Behavior

The Application Compatibility Cache service is a kernel mode driver. If Application Compatibility Cache fails to start, the error is logged. Windows 8 startup proceeds, but a message box is displayed informing you that the ahcache service has failed to start.

Restore Default Startup Type for Application Compatibility Cache

Automated Restore

1. Select your Windows 8 release and edition, and then click on the Download button below.

2. Save the RestoreApplicationCompatibilityCacheWindows8.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator.

4. Restart the computer.

Note. Make sure that the ahcache.sys file exists in the %WinDir%\system32\DRIVERS folder. If this file is missing you can try to restore it from your Windows 8 installation media.

Yea, though I walk through the valley of the shadow of death, I will fear no evil: for thou art with me; thy rod and thy staff they comfort me.