error code 2250

I can not start up the Workstation service.  I keep getting service-specific error code 2250. 

I have replaced the mup.sys file per MS instructions and still get the same error when trying to start workstation service

I'm running XP service pack 3 on a Dell Inspiron 530 desktop.


Question Info

Last updated September 26, 2019 Views 23,291 Applies to:
When trying to start the Workstation Service you are seeing a message like this:

Windows could not start the Workstation on Local Computer.  For more information, review your System Event Log.  If this is a non-Micorosft service, contact the service vendor, and refer to the service-specific error code 2550.

Then if you look in the Event Viewer System log you may find thing like this:

Event Type:    Error
Event Source:    Service Control Manager
Event Category:    None
Event ID:    7024
The Workstation service terminated with service-specific error 2250 (0x8CA).

Event Type:    Error
Event Source:    Workstation
Event Category:    None
Event ID:    5727
Could not load Rdbss device driver.

The problem is most likely a missing or corrupt rdbss.sys file.  The rdbss.sys file should be in this folder:


We know that XP keeps backup copies of critical system files in this folder:


So you can just copy the rdbss.sys file from c:\windows\system32\dllcache and paste it into this folder:


Respond in the affirmative if asked to overwrite the current file.

If you can't find a copy of the file in the c:\windows\system32\dllcache folder, depending on your installation there may be a copy of the file in this folder:


Somehow or another, you need to replace the rdbss.sys file.

See if you can start the Workstation Service after replacing the rdbss.sys file.

If you still can't find it, you can download one from my SkyDrive, but see how those other ideas work first.

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