A print job is stuck in the printer queue of the Windows NT print server and cannot be deleted.
To remove the print job, follow these steps. On the print server:
Close Print Manager in Windows NT 3.5x. Close the Printers Folder in Windows NT 4.0.
In Control Panel, double-click the Services icon, click the Spooler Service, and then click Stop. If you are using TCP/IP Printing Services, click it and then click Stop.
Delete the *.spl and *.shd files that show the approximate time and date of the print job causing the problem. They are in the %Winroot%\System32\Spool\Printers directory.
NOTE: In some cases, Windows NT may not allow the *.spl file(s) to be deleted or renamed. Renaming the *.shd file and restarting the spooler service may be enough to clear the problem.
Restart the services stopped in step 2.
With corrupt or too many .spl and .shd files, a Dr. Watson or Application Error in Spools may also occur.
For additional information, please see the following article in the Microsoft Knowledge Base:
TITLE : Application Error in SPOOLSS.EXE When Printing