A family of Microsoft word processing software products for creating web, email, and print documents.
We have seen several reports like yours over the past few days.
Do the following: Exit all Office apps and run an Online Repair. Before you begin, verify that your Office product is associated with your account at https://account.microsoft.com/services so that you can reinstall, which is a common final step of an Online Repair.
Instructions for repairing Office can be found in the article at https://support.microsoft.com/en-us/office/lifecycle/repair-an-office-application .