Thanks for the quick reply.

But if I can't even open the Workbench, how can I acces Polyflow?

I understand that there is no older build of the Student software, but can I somehow save an older version in the newest student software? I.e. I can save a my Power Point as an old .ppt file and the new .pptx file. That way older PP versions can acces the presentation I made on the new software. I assume there is no such feature in Ansys?