FltMgr Service Defaults in Windows XP
File System Filter Manager Driver.
FltMgr is a file system driver. In Windows XP it is starting before Kernel initialization. If the FltMgr fails to start, the technical information about the error is added to the Event Log. Windows XP startup should proceed, but a message box should be displayed informing the user that the FltMgr service has failed to start.
Restore Default Startup Configuration for FltMgr
1. Select your Windows XP edition and service pack, and then click Download.
2. Save the WinXP_FltMgr_Service_Startup.cmd file to a local storage device.
3. Run the saved file.
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 changed, damaged or deleted, you can restore its original version from Windows XP installation media.