A family of Microsoft word processing software products for creating web, email, and print documents.
Exit all Office apps and run a repair; see https://support.microsoft.com/en-us/office/lifecycle/repair-an-office-application .
An Online Repair is more thorough. Before you begin, verify that you can access your account at https://account.microsoft.com/services and that Office is associated with it. That way, you make sure that you can reinstall Office, which is normally the final step of an Online Repair.