I did end up uninstalling and reinstalling Microsoft Office just to be safe.Worst comes to worst, you reinstall Microsoft Office.

Tested all the programs AND all of them except Skype seem to work fine.Copied the files from '_Microsoft Office 'back to' 'Microsoft Office'.Created a new volume (and mounted it in the new empty folder).Navigated to Control Panel->Admin-Tools->Computer-Management->Disk Management (.Created a new (empty) 'Microsoft Office' folder.

Renamed 'Microsoft Office' to' '_Microsoft Office'.

NEVER use drive C: Here, I think, is a very simple and drama free solution. This method is a hardware level change so Office can be reinstalled multiple times and I DON'T like registry edits because it's unsafe, not easily repeated-you'll forget what you did-and Windows doesn't really like it either. Use XML and all different kinds of drama. I even looked into some Windows Admin tools which But I wasted a lot of time, looked high and low and could not get it done.

I have a 32GB hard drive so I was not keen on installing Office on C: Especially since it takes 2.9Gb and not just 2Gb as it told me. This is my experience with WINDOWS-10 & OFFICE-2016:

Installing office 2016 on windows 10