Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Did you try repairing the office?
Click on Start > Control Panel > Add or Remove programs /Programs and Features > Highlight the Office 2010 > Click on Change > Choose Repair and verify the results.
If issue persists, use this Microsoft Fixit tool to uninstall the Office 2010 and re-install it.
Note: While reinstalling Office, choose normal installation instead of click-2-run version.