Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello Jamie,
Welcome to Microsoft Community and thank you for posting your query.
Let me assist you with Office activation.
Let’s try the following methods and check if the issue gets resolved.
Method: 1
Make sure you sign out of all the Microsoft Services on your default browser including Mail, Calendar, MSN or other Microsoft sites etc. (to which you have logged in).
You may open Word or Excel document, click on File, Account, User Information, Sign out from all the user account and then sign in using the registered email account and check if you are able to activate Office 365 University.
Method: 2
You may try to open Office application in administrator mode and then try to activate it and check if it helps.
Browse to the following location.
C:\Program Files\Microsoft Office 15\ClentX86\Root\Office15. (Windows 32 bit)
C:\Program Files(x86)\Microsoft Office 15\ ClientX64\Root\Office15. (Windows 64 bit)
Right click on Excel file and click on ‘Run as administrator’ and then try to activate Office suite and verify the status.
I hope the above information helps. Let us know if you need further assistance.
Thank you.