FltMgr Service Defaults in Windows 8

File System Filter Manager Driver.

Default Settings

Startup type:Boot
Display name:FltMgr
Service name:FltMgr
Service type:filesys
Error control:critical
Group:FSFilter Infrastructure
Path:%SystemRoot%\system32\drivers\fltmgr.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\FltMgr

Default Behavior

The FltMgr service is a file system driver. In Windows 8 it is being loaded by Boot Loader before Kernel initialization. If FltMgr fails to load or initialize, the error details should be automatically logged. Then Windows 8 is restarting the PC and attempting to use the Last Known Good configuration. If the Last Known Good configuration isn't working properly, Windows 8 startup ends with a Stop error. If you disable the FltMgr service, Windows 8 will fail to start.

Dependencies

All the services listed below will not start if FltMgr is disabled:

Restore Default Startup Configuration for FltMgr

1. Select your Windows 8 edition and update pack, and then click Download.

2. Save the Win8_FltMgr_Service_Startup.cmd file to a local storage device.

3. Run the saved file as an administrator.

4. Restart the computer.

The FltMgr service is using the fltmgr.sys file that is located in the %WinDir%\system32\drivers folder. If the file is corrupted or deleted, you can put it back in there.