Printer Driver Deinstallation

What was the Problem? I wanted to update the HP UPD 5.1 PCL 6 Driver to the HP UPD 5.4 PCL 6 Drivers. As i already new for the silent install i used the install.exe /q /npf /h /dm (automatic mode, do not open the printer folder after installation, no dialog is shown, Dynamic Mode) if you need mor commandswitches you can just pull the install.exe in a cmd window and use /? for more help.

So i tried the installation and after about an hour i aborted the installation. What was wrong?
As i said the UPD 5.1 was already installed and the setup routine was not able to update the Driver and or the Software. So i wanted to delete the Printer and the Driver. I went to the Printer folder, clicked on File, then on Server properties and there i clicked on Drivers and wanted to delete the Driver… i got an error that the printer was already in use. After some use of google i found out that i should restart the Printer spool (net stop spool ; net start spool) so i tried it, but without any success. Continue reading Printer Driver Deinstallation