Identifies an application and enforces software restriction policies.
This service also exists in Windows 10, 11 and 8.
| Windows 7 edition | without SP | SP1 |
|---|---|---|
| Starter | Manual | Manual |
| Home Basic | Manual | Manual |
| Home Premium | Manual | Manual |
| Professional | Manual | Manual |
| Ultimate | Manual | Manual |
| Enterprise | Manual | Manual |
| Display name: | AppID Driver |
| Service name: | AppID |
| Type: | kernel |
| Path: | %WinDir%\system32\drivers\appid.sys |
| Error control: | normal |
The AppID Driver service is a kernel driver. If the AppID Driver fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the AppID service has failed to start.
AppID Driver will not start, if the following services are stopped or disabled:
If the AppID Driver is stopped, the Application Identity fails to start and initialize.
1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.
2. Save the RestoreAppIDDriverWindows7.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 to save changes.
Note. Make sure that the appid.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 7 installation media.