Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello,
I contact MS and the solution was to deinstall Office 2013. But it worked only after download the file from:
go.microsoft.com/?linkid=9815935
the program deinstalled the 'rest' of my office version. After deinstallation it was possible to install office 2013 as new - and, good news - all my acounts, contacts and emails have been saved...puuhhh
Best regards
Thomas