Sunday, February 28, 2016

Exchange Hybrid News for the Month

Microsoft Exchange team has made an significant announcement for Hybrid customers that, The Office 365 Hybrid Configuration wizard has been updated to support Exchange 2010. Most of the Hybrid customers with Exchange 2010 and still evaluating their migration path to either 2013/2016 based hybrid, this new announcement provides an opportunity to experience the new wizard during Hybrid changes in the environment.


You can download the new wizard or wait till the next Update Roll-up as Microsoft team is updating the Exchange Management Console in Exchange 2010 SP3 RU13 with the new HCW.

More on this experience is available in detail in the below EHLO blog post


Importance Notice:

Microsoft team made one more critical announcement about Certificate expiration for Exchange 2013 Hybrid customers.

Make sure to make the changes before 15th April 2016 deadline to ensure that your Hybrid Mailflow is not affected by the change.


Plan for the manual change at the earliest if you cannot update the environment with the latest CU to stay safe with the changes.

Another Critical Notice to all Exchange Customers:

Make sure you don't install the .NET Framework 4.6.1 in your environment, as its not supported by Exchange.

Read the blog post to understand more inline with Exchange Supportability Matrix and steps to block the installation of the update and roll back if its already deployed.

Read here: On .NET Framework 4.6.1 and Exchange compatibility

* If you have On premises Lync/Skype for Business server then this above scenario applies for them too along with Exchange.

Add-on bytes:

Along with the above critical updates few more enhancements are made to the Exchange world,

Exchange Server Deployment Assistant updated with the new Exchange 2016 based deployment scenarios including Hybrid deployment with Exchange 2010 co-existence.


The most awaited availability of Exchange 2013 and 2016 Exmon tool.


Another great news for Exchange customers using Public folders.

Check here : Exchange Public Folder Mailbox Limit Increased from 100 to 1,000


New update to Cross Premise Mailbox Permissions in Exchange Hybrid.

Cross Premise Mailbox permission (Full Access)  between an Exchange On premise mailbox to Exchange Online Mailbox and vice versa is now supported. There are few pre-requisite like Outlook Client version and no Auto Mapping support.

This is limited only to Full Mailbox permission and use of “Send-As”, “Receive-As”, or “Send on behalf” of mailbox permissions are not supported and follow the same guidance of Hybrid.

More on this is updated in the TechNet article below:

Exchange hybrid deployment considerations


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