I have an old smartphone. A HTC HD2 running Windows Mobile 6.5
Till Windows 7, I had no problems to synchronize my contacts, Calendar and Task with my pc via Windows Mobile Device Center.
Now, I upgraded my PC to Windows 10 and replaced the Windows Mobile Device Center with the new version.
Since, I cannot synchronize any more. Each time I get the message 'Exchange Activesync encountered an error'. There is no error number, no suggestion.