Smartlocker Filter Driver - Windows 11 Service
Identifies files created by authorized installers.
This service also exists in Windows 10.
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: | Smartlocker Filter Driver |
| Service name: | applockerfltr |
| Type: | kernel |
| Path: | %WinDir%\system32\drivers\applockerfltr.sys |
| Error control: | normal |
Default Behavior
The Smartlocker Filter Driver service is a kernel mode driver. If Smartlocker Filter Driver fails to start, the error is logged. Windows 11 startup proceeds, but a message box is displayed informing you that the applockerfltr service has failed to start.
Dependencies
Smartlocker Filter Driver is unable to start, if at least one of the following services is stopped or disabled:
Restore Default Startup Type for Smartlocker Filter Driver
Automated Restore
1. Select your Windows 11 edition and release, and then click on the Download button below.
2. Save the RestoreSmartlockerFilterDriverWindows11.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 applockerfltr.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.