Not possible to print via the server when running as service

I have an application where user converts a doc to pdf thru domino server. The method is to use a pdf printerdriver installed at the server.

The dominoserver is running as a service and when i call the print command i get a error that “no default printer available”. However if i shut down the server and start it manually (not via the service) then everything works.

Seems like that the local system acount (whatever this is) dont have access to the printers.

any ideas plz.

btw. I have tried to run the notesserver as a service based on a administrator user. The printing works but the server console is not visible (becomes a hidden service)

Subject: Use Administrator account and allow service interact with desktop