A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If this problem is affecting more than one Office app, the best option is to perform a full online repair of your Office installation.
Before performing this process, please log into your Microsoft account on this link (https://account.microsoft.com/services/) and check to ensure your Office licence or Microsoft 365 subscription is listed correctly on your account.
Open the Settings App (gear icon on your Start Menu)
Go to Apps - Installed Apps, then scroll down to find Microsoft Office
Select that and choose Modify - Online Repair
That should fix any issues with your Office Installation.