When you have 2007 2013 , and more , and residuals of old embeded home versions… your computer can be rather «dirty» .. To get rid of all office aps to start with a clean slate https://support.office.com/en-us/article/uninstall-office-from-a-pc-9dd49b83-264a-477a-8fcc-2fdf5dbf61d8?ui=en-US&rs=en-US&ad=US gives you a nice remove all tool…
And best off all… after removing everything … old 2013 versions, and 5 different skype versions… of course it was strange to not be able to open an email… or not even excel… notepad worked…
Then I just went to my SharePoint.com .. and installer office pro , and in less time than it took me to make a cup of coffe … Evrything was back in place.
The most impressive was outlook… my outlook reads two msky.okbase.com account on exchange .. an old online.no , an old gmail.com mailboxs.
After install .. everything Ok… PUUUUhhhhhha