Hi! Reinstall Outlook. That should fix it.
Windows 11
- Open Windows Settings (Press WINDOWS + I keys) > Select "Applications" > "Installed Applications".
- Search for the application you want to uninstall > Click 3 Points > Uninstall > Wait for the program to be uninstalled > Restart your computer.
Windows 10
- Open Windows Settings (Press WINDOWS + I keys) > Select "Applications" > "Applications & Features".
- Browse and select the application you want to uninstall > Click Uninstall > Wait for program to be uninstalled > Restart computer.
Download and install New Outlook again: