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:
- AppID Driver
- Application Identity
- File Information FS MiniFilter
- File System Dependency Minifilter
- Filetrace
- Superfetch
- UAC File Virtualization
- Windows Defender Mini-Filter Driver
- Windows Overlay File System Filter Driver
Restore Default Startup Configuration of FltMgr
1. Run the Command Prompt as an administrator.
2. Copy the commands below, paste them into the command window and press ENTER:
sc config FltMgr start= boot
sc start FltMgr
3. Close the command window and restart the computer.
The FltMgr service is using the fltmgr.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 8 installation media.