A family of Microsoft word processing software products for creating web, email, and print documents.
Have you tried repairing the Office installation (via Windows Control Panel > Programs > Programs & Features > Microsoft Office (version) > Change > Repair)?
Is Office 2010 the only Office version installed on your system? If not, see: https://support.microsoft.com/en-au/help/2528748/microsoft-office-2010-professional-plus-configures-each-time-you-start