Output Network Folder Error

In workflow I am using an Output configuration that stores a pdf to a local drive and it works fine, however, when i change the location in the output to a network drive, i get an error when running the workflow (W3001).
Using the send to folder to the network drive works fine, what is the difference between the 2 processes and how can i get the network drive in the output to work?

The output creation used the folder T:\user\Zugferd\Stapel-ID12355 (when error ocurred) then i tried changing to the full network path and it says is invalid

Quickly like that, seems like a user rights error. But to be sure, I suggest you open a technical support ticket through our website. Someone will remote at your site and look into it.