...
This is often seen for individuals who are new to WVU. To receive the license to download Office Pro Plus, you must claim your Login account. Claiming this account leads to Office Microsoft 365 accounts being licensed for those who should have them.
...
Once the Login account has been claimed, please allow a couple of hours before attempting to download Microsoft Office Pro Plus again. Students must also complete New Student Orientation (NSO) and register for classes prior to installation.
Use Students should use @mail.wvu.edu (not mix) when prompted for your email address:
During the installation process, or potentially when running Office Microsoft 365 applications, you may be prompted to sign in. To do so, enter your Login enter your Login username followed by @mail.wvu.edu when asked for an email address and use your Login password for the password.
...
Example: If your Login username is glweinrib, enter the address as follows: glweinrib@mail.wvu.edu.