Try this:

1. Open Settings: Click on the Start button located at the bottom-left corner of your screen and select Settings (the gear icon) from the pop-up menu.
2. Access Apps: In the Settings menu, click on Apps.
3. Find Office: Scroll down through the list of installed applications to find your Microsoft Office product. Once found, click on it, then select Modify.
4. Repair Options:
   • Click-to-Run Installation:
     • In the window that appears, select Online Repair to ensure everything is fixed.
     • You can also choose Quick Repair for a faster option that detects and replaces corrupted files.
     • Click on Repair and follow the on-screen instructions to complete the process.
   • MSI-based Installation:
     • In the window that opens, select Repair and click Continue.
     • Follow the on-screen instructions to complete the repair process.