System Restore Filter Driver (sr) Service Defaults in Windows XP

System Restore Filesystem Filter Driver by Microsoft Corporation.

Default Settings

Startup type:Boot
Display name:System Restore Filter Driver
Service name:sr
Service type:filesys
Error control:normal
Group:FSFilter System Recovery
Path:%SystemRoot%\system32\DRIVERS\sr.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\sr

Default Behavior

System Restore Filter Driver is a file system driver. In Windows XP it is starting before Kernel initialization. If the System Restore Filter Driver 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 sr service has failed to start.

Restore Default Startup Configuration for System Restore Filter Driver

1. Run the Command Prompt.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config sr start= boot
sc start sr

3. Close the command window and restart the computer.

The sr service is using the sr.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.