Hi there and welcome
Can you tell me please which version of office you are using and are you on a widows or mac computer and which version?
Please let me know.
Ok, can you press the windows key + X
Click on control panel
Click on uninstall a program
Click on office, then click change then repair
Once done, tell me if it then works please
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results