Installing Exchange server 2019 in a different site but same Active directory domain

Josie Lewis (TLS Admin) 20 Reputation points
2024-10-31T14:39:11.3033333+00:00

I have a Hyper-V VM installed Exchange Server 2016 CU23 in a hybrid setup on-prem which is, I'm trying install a Exchange Server 2019 on an Azure VM which is connect to our Active Directory domain, the schema master is on a DC located on our on-prem Hyper-V cluster. I've tried running setup specifying the /DomainController:<DomainControllerFQDN> switch but I'm still bumping into the same issue it keeps telling me the local computer isn't in the same domain and site, yes it not in the same site as the current Exchange server, but its definitely is in the same domain. If I move the schema master role to a DC in the Azure site would this get run this issue?

Exchange | Exchange Server | Other
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  1. Andy David - MVP 157.8K Reputation points MVP Volunteer Moderator
    2024-10-31T19:51:32.2266667+00:00

    Yea, has to be run in the same site and domain as the schema master.

    You dont need to move the schema master though. Just run the prep commands from a server in that site and domain. You can download the binaries and run from the command line

    You may need to upgrade .net on this server etc...

    Sample:

    E:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataON /PrepareSchema

    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/prepare-ad-and-domains?view=exchserver-2019

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