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Migrate Hybrid Exchange 2013 to Hybrid Exchange 2019

Gopal Shanmugam 5 Reputation points
2023-02-10T02:52:24.3933333+00:00

Hi Team,

I have a Hybrid Exchange 2013 running in server 2012 r2 in my organisation and now planning to migrate to Hybrid Exchange 2019 on a server 2019 vm and completed the prerequists as mentioned in Microsoft portal.

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

Am working on this Exchange first time - if you could please provide me with a detailed step by step Instructions that will be much helpful.

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  1. Amit Singh 5,306 Reputation points
    2023-02-16T05:59:11.89+00:00

    You just need to create a new Exchange 2019 that coexists with Exchange 2013. Then configure external virtual directories for Exchange 2019 from the Exchange admin center:

    Then enable MRSProxy for Exchange 2019:

    Get-WebServicesVirtualDirectory | Set-WebServicesVirtualDirectory -MRSProxyEnabled $true

    After that, you could rerun HCW to switch hybrid end point from Exchange 2013 to Exchange 2019.

    Finally, you could change the public DNS record point to Exchange 2019 server if you want.

    The Exchange Deployment Assistant could provide detailed steps for you to deploy Exchange 2019 coexists with Exchange 2013.

    If you have migrated mailboxes and DNS records to Exchange 2019.

    3 people found this answer helpful.
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  2. Kael Yao 37,746 Reputation points Moderator
    2023-02-13T01:22:42.0333333+00:00

    Hi @Gopal Shanmugam,

    The general steps would be like:

    1. install Exchange 2019 to co-exist with Exchange 2013
    2. configure Exchange 2019 virtual directories, certificates, then migrate mailboxes (including arbitration mailboxes) from Exchange 2013 to 2019
    3. run HCW (Hybrid Configuration wizard) and choose the new Exchange 2019 server as the endpoint
    4. turn off Exchange 2013 to see if any problems will occur
    5. decommission Exchange 2013 server

    For Exchange 2019 installation and configuration, you can use the Exchange Deployment Assistant which would guide you step by step.

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    2 people found this answer helpful.
  3. Mihir Patel 0 Reputation points
    2023-10-16T18:39:54.59+00:00

    After step 3, if there are problem, what are the steps to rollback?

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