Dieser Beitrag aus einem anderen Forum löste auch meine Störung:
I managed to resolve the error myself.
The Mail app on Windows 10 was using my Hotmail account, so I decided to log into Outlook with that account via the web interface. Once there I went to Options -> General -> Mobile Devices (the left hand side task bar). There I could see a number of
'mobile devices' that were synchronized. If you select the 'Detail' icon you can get further details about the device that it is synchronizing with or synchronized. I then selected the 'Remove' icon on the 'Device' that was having issues syncing. After it
is processed and I refreshed using the 'Refresh' icon, I proceeded to re-sync using the Mail app on Windows 10. It properly synchronized and a new 'mobile device' appeared on the list.
Mit freundlichem Gruss - Harald Haas - MCSE: Cloud Platform and Infrastructure — Certified 2016; MCSA Windows Server 2016
