Microsoft Office Questions? Ask a IT Expert for Support ASAP
Hi, I can help with the issue.
This is a known issue that when the software loses or never gets activated it will deactivate the software.
To fix it, you will need to reactivate the software with a Product Key. If you don't have the key, then it may have expired or in use on another system. Reactivation is the only way to fix the problem.
Uninstall the application and reinstall with a valid Product key.