Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
vganore
Ansys Employee

Can you please post a screenshot of the licensing error? I don't think Zemax Student version will ask you to supply a license file. Make sure you are downloading the student version from here: 

Ansys Zemax OpticStudio Student | Free Software Download

[bingo_chatbox]