Forum Discussion
Preparing for Hybrid Configuration Wizzard with Microsoft 365 and In-house Exchange 2010
andyo64 One part of hybrid configuration is Azure Active Directory Connect. AADC can only be installed on Server 2012 or newer. However, it can synchronize AD running on any server version as long as the Domain Functional Level is 2003 or newer.
Reference: https://docs.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-install-prerequisites
The other part of HCW is creating the hybrid Exchange configuration (duh!) and that can be done from any domain joined computer.
Hope this helps!
AADConnect is already setup on a 2008 server in my environment for Sharepoint and Teams - it works fine and I've recently upgraded it to the latest version 1.5.45.0. You guys are making me nervous that this only runs on 2012 because I'm running this on 2008?
That said - - So I'm thinking that when I run the HCW it will see this and only create the Exchange Hybrid configuration part. DoscoeDerek
andyo64 haha, guess what, I just started migrating a company to 365 from Exch10 on prem and they also have AADC running on 2008. So, perhaps it installs and works, but MS might not want us to do it for some good reason or they may not give support with that configuration. IDK. Always something to learn!
About HCW, you have it exactly right! At some point in the HCW it will ask about AADC and you can select the option "I'll configure this on my own or later or something like that". When HCW is done, you should be ready to start moving mailboxes!
Lucky me - you'll have to tell me how the HCW goes. Are you planning on upgrading the AADConnect to 2012 or better? Being that the functional level only needs to be 2003, I think 2008 should be fine.DoscoeDerek
andyo64 HCW ran fine. AADC seems to be working fine. We've moved almost all of the mailboxes to 365 no issue.