Synchronizing my calendar with Exchage server causes errer code 85002025, meening?

[Windows Central Question]

I am trying to synchronize my personal data (contacts, calendar, tasks) on my Windows Phone 8.1 with my personal data on an Exchange server.
Contacts and tasks are synchronized well and completely.
Calander synchronization allways gets stuck somewhere in the middle. Windows phone shows error code 85002025.
What does error code 85002025 mean?
How can I solve and overcome this problem?
Is there any work-around?
Thank you for any kind of help.
Hubert

 

[RumoredNow]

Here is a pretty extensive Help dialog on this issue: Error Code: 85002025 - Not synchronizing with exchange after - Microsoft Community

It looks like it might actually be server side. Check with your Exchange Server Admin.