A family of Microsoft word processing software products for creating web, email, and print documents.
Try an Online Repair, which is the first suggestion in the AI-generated reply. Exit all Office apps, verify that you can access your account at https://account.microsoft.com/services so that you can reinstall Office after the repair, and then follow the instructions in the support article at https://support.microsoft.com/en-us/office/lifecycle/repair-an-office-application .