Smartlocker Filter Driver - Windows 10 Service
Identifies files created by authorized installers.
This service also exists in Windows 11.
Startup Type
| Windows 10 version | Home | Pro | Education | Enterprise |
|---|---|---|---|---|
| 1507 | not exists | not exists | not exists | not exists |
| 1511 | not exists | not exists | not exists | not exists |
| 1607 | Manual | Manual | Manual | Manual |
| 1703 | Manual | Manual | Manual | Manual |
| 1709 | Manual | Manual | Manual | Manual |
| 1803 | Manual | Manual | Manual | Manual |
| 1809 | Manual | Manual | Manual | Manual |
| 1903 | Manual | Manual | Manual | Manual |
| 1909 | Manual | Manual | Manual | Manual |
| 2004 | Manual | Manual | Manual | Manual |
| 20H2 | Manual | Manual | Manual | Manual |
| 21H1 | Manual | Manual | Manual | Manual |
| 21H2 | Manual | Manual | Manual | Manual |
| 22H2 | 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 10 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 of Smartlocker Filter Driver
Automated Restore
1. Select your Windows 10 edition and release, and then click on the Download button below.
2. Save the RestoreSmartlockerFilterDriverWindows10.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 applockerfltr.sys file exists in the %WinDir%\system32\drivers folder. If this file is missing you can try to restore it from your Windows 10 installation media.