Issue:
If you're unable to activate Office 365 after signing in with your Lehigh University username and password on a Mac, follow these troubleshooting steps before using the License Removal Tool.
...
Activation issues on Mac can be caused by outdated software, temporary glitches, or conflicting license data tied to your account.
Troubleshooting Steps:
Ensure You're Signed in Correctly
Make sure you're signing into Office 365 using your Lehigh University credentials (username@lehigh.edu and associated password).
Restart Your Mac
Restarting your Mac can often resolve activation issues by refreshing system processes and clearing any temporary problems.
Check for Office Updates
Open any Office 365 app (such as Word or Excel), click on the Help menu, and select Check for Updates.
Make sure Office is updated to the latest version, as updates often fix activation issues.
Uninstall and Reinstall Office
If updating doesn’t resolve the issue:Open Finder > Applications, find the Microsoft Office apps, and drag them to the Trash.
After uninstalling, reinstall Office 365 from the Lehigh University Office 365 portal.
...
If you're still unable to activate Office 365 after trying these steps, it may be due to a conflicting or expired license on your Mac.
In this case, use the License Removal Tool:
Using the License Removal Tool (Mac)
Download the License Removal Tool
Download the License Removal Tool from the Microsoft website for Mac.Run the Tool
Run the License Removal Tool on your Mac to clear all existing Office 365 license information.Re-sign into Office 365
Once the tool completes:Open any Office 365 application.
Sign back in with your Lehigh University credentials (username@lehigh.edu).
Activate Office 365
You should now be able to activate Office 365 and use the applications without further issues.