Microsoft Office has not been installed for the current user...

 

This is quite a common problem it seems – after installing an update to Microsoft office, some of the applications will not open.

Here is one solution:
Create a temporary Windows login account with administrative rights, then log into that new account.

While logged in as the temporary user, open every Office product you have, then close one at a time (Excel, Word, Powerpoint, Project etc…) After opening every Office application, start regedit.

 (Start > Run > then type in Regedit)
Go to HKEY_CURRENT_USER > Software > Microsoft > Office, and highlight Office Right click on Office, and select ‘Export’ Save the .reg file somewhere on your computer – note down the location... See More