I have scripted DeleteAllPrintJobs.bat to delete all the print jobs in the queue.
Pending print jobs are located in the %systemroot%\system32\spool\printers folder, unless you moved it.
If you want to delete all the print jobs in the queue, run DeleteAllPrintJobs.bat, using any of the following:
Start / Run / DeleteAllPrintJobs / OK
Open a CMD.EXE window and type DeleteAllPrintJobs
Double-click a shortcut to DeleteAllPrintJobs.bat
@echo off net stop spooler ping 127.0.0.1 -n 4 >nul del %systemroot%\system32\spool\printers\*.* /F /Q /S ping 127.0.0.1 -n 3 >nul net start spooler