AADDS Domain Controller Upgrade?

Mathew Jung 126 Reputation points


It looks like there may be a roll out, affecting Active Directory Domain Services, upgrading the VMs to Windows 2019 Datacenter (previously Windows 2012 R2).

Unfortunately, this happened during our PEAK business hours, causing an outage. I have opened up a Business Critical support ticket, so I can obtain further information on this. It looks as though only ONE of the two domain controller VMs has been replaced. This tells me that we have to prepare for a second outage.

If anyone has any further information, it would be great if you could share.



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  1. JimmySalian-2011 41,916 Reputation points

    Hi Matthew,

    Thank you for asking this question on the Microsoft Q&A Platform.

    Ideally you should enable the notifications for the alerts and if you follow the below link it should send you alerts about the managed services.


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  2. Rachel Gomez 166 Reputation points

    Upgrade Active Directory Domain Controllers
    U-Move is the all-in-one AD software utility that lets you move Active Directory to a new replacement computer or VM that is running a newer version of Windows Server. This is sometimes called a “swing migration”.

    Migrating Active Directory to a new computer can be a complicated task. U-Move will guide you through a simple step-by-step procedure to replace the old domain controller (DC) with a new domain controller, all while checking your actions each step of the way.

    U-Move will carefully guide you through the upgrade process. It will perform hundreds of tests to look for many common (and some not-so-common) errors. U-Move will offer to do some of the more difficult steps automatically for you: moving the FSMO roles and moving DNS. Or you can do it all yourself and just have U-Move check your work.

    U-Move Upgrade Replication Report
    Before You Begin
    Before you attempt to migrate AD from your production server we recommend that you first practice the migration procedure offline. Use U-Move to clone AD to a test VM in your test lab. Inside your test lab run U-Move to migrate AD to a second VM that is running the new version of Windows Server.

    This will allow you to become familiar with the upgrade process. It will let you catch any potential problems or issues early, and it will help you minimize the actual downtime on your production network.

    What U-Move Will Do
    U-Move will perform the following tasks for you:

    Inspect the new server for suitability.
    Advise you on how to prepare the domain (e.g., adprep), and then verify it.
    Guide you in promoting the new server as a domain controller (DC).
    Verify that the new DC was configured correctly (DNS, GC etc.)
    Run replication tests between the old and new DCs.
    Back up all domain DCs to allow rollback.
    Copy the DNS zones and the NTP settings to the new DC.
    Move the FSMO roles from the old DC to the new DC.
    Guide and check your post-upgrade steps, including changing the IP address, demoting the old DC, and changing the computer name.
    You can pause between each step, or automatically roll back your changes to restore the DCs to their original state.

    In-Depth Reports
    At each step during the upgrade process U-Move will run numerous tests and then print a detailed report. If it finds any errors or non-recommended practices it will flag them and suggest a workaround or advise you on how to correct the problem. The various reports include the following:

    The Verify Computer Report
    The DC Promotion Report
    The DNS Tests Report
    The Replication Tests Report
    The FSMO Role Transfer Report
    The Post-Upgrade Tests Report
    The reports will give you in-depth information during each step of the upgrade task.

    Rachel Gomez

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