Driver Verifier Extension - Windows 11 Service
Driver Verifier component to help find bugs in device drivers.
This service also exists in Windows 10 and 8.
Startup Type
| Windows 11 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | Manual | Manual | Manual | Manual |
| 23H2 | Manual | Manual | Manual | Manual |
| 24H2 | Manual | Manual | Manual | Manual |
Default Properties
| Display name: | Driver Verifier Extension |
| Service name: | VerifierExt |
| Type: | kernel |
| Path: | %WinDir%\System32\drivers\VerifierExt.sys |
| Error control: | normal |
| Group: | WdfLoadGroup |
Default Behavior
The Driver Verifier Extension service is a kernel mode driver. If Driver Verifier Extension fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the VerifierExt service has failed to start.
Restore Default Startup Type for Driver Verifier Extension
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreDriverVerifierExtensionWindows11.bat file to any folder on a local drive such as SSD or a hard disk.
3. Right-click the downloaded batch file and select Properties.
4. Check the Unblock checkbox and click OK.
5. Right-click the batch file again and select Run as administrator.
6. Restart the computer to save changes.
Note. Make sure that the VerifierExt.sys file exists in the %WinDir%\System32\drivers folder. If this file is missing you can try to restore it from your Windows 11 installation media.