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Office 365 to On-Premise Shared Calendar Not Syncing

Previously we blogged about how to share the Full details calendar between Office 365 and Exchange on-premise here.



We configured Exchange 2013 Hybrid with office 365.

Shared full detailed calendar from Exchange 2013 on-premise to office 365 is synchronizing the calendar meeting.

Shared full detailed calendar from office 365 to Exchange 2013 on-premise is not synchronizing the calendar meeting.



Microsoft has confirmed that this is an unknown issue which they were unaware until we reported on Feb 04, 2016. We have helped Microsoft in identifying this issue.


Microsoft Escalation Engineering team and Product group were able to reproduce the same issue in their lab.

Microsoft is working on developing new code and deploying it.


To me there can be a compatibility issue between Exchange 2013 and 2016 because office 365 is Exchange 2016.

Stay Tuned. I will update this blog once it will be resolved.


Prabhat Nigam

Microsoft MVP | Exchange Server


2 Responses to “Office 365 to On-Premise Shared Calendar Not Syncing”

  1. Rajesh Says:

    Dear Prabhat,

    How can we migrate a room mailbox from on-premise to Office 365 ?


  2. Prabhat Nigam Says:

    what is the issue if you move it like a normal mailbox.

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