MRXSMB Service Defaults in Windows XP


Default Settings

Startup type: System
Display name:MRXSMB
Service name:MRxSmb
Service type:filesys
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MRxSmb

Default Behavior

MRXSMB is a file system driver. In Windows XP it is starting right at Kernel initialization. If the MRXSMB 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 MRxSmb service has failed to start.

Restore Default Startup Configuration of MRXSMB

1. Run the Command Prompt.

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

sc config MRxSmb start= system
sc start MRxSmb

3. Close the command window and restart the computer.

The MRxSmb service is using the mrxsmb.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 XP installation media.