Smartlocker Filter Driver (applockerfltr) Service Defaults in Windows 11
Identifies files created by authorized installers.
Default Settings
| Startup type: | Manual |
| Display name: | Smartlocker Filter Driver |
| Service name: | applockerfltr |
| Service type: | kernel |
| Error control: | normal |
| Path: | %SystemRoot%\system32\drivers\applockerfltr.sys |
| Registry key: | HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\applockerfltr |
Default Behavior
Smartlocker Filter Driver is a kernel driver. In Windows 11 it starts only if the user, an application or another service starts it. If Smartlocker Filter Driver fails to start, the failure details will be recorded into Event Log. Then Windows 11 should boot up and notify the user about the applockerfltr service startup failure.
Dependencies
Smartlocker Filter Driver cannot be started, if the following services won't start:
Restore Default Startup Configuration of Smartlocker Filter Driver
Before you begin doing this, make sure that all the services on which Smartlocker Filter Driver depends are configured by default and function properly. See the list of dependencies above.1. Run the Command Prompt as an administrator.
2. Copy the command below, paste it into the command window and press ENTER:
sc config applockerfltr start= demand
3. Close the command window and restart the computer.
The applockerfltr service is using the applockerfltr.sys file that is located in the C:\Windows\system32\drivers directory. If the file is removed or corrupted, read this article to restore its original version from Windows 11 installation media.