Double-check that you're signed in with the correct Microsoft account associated with your Office subscription or product key ...

Scroll down to 'Software licenses' to find serial numbers and product keys ... Both will find Windows and Microsoft Office product keys but the Plus edition will also scan external hard drives ...

Microsoft Software used by the Gina Cody School of Engineering and Computer Science requires activation with a Key Management Service (KMS ... should automatically re-activate, and your Office ...