Do I need to perform App rationalization before DC Upgrade from 2016 to 2019?

Garima Das 1,041 Reputation points

Hi everyone,

I have my DNS moved to Infoblox from my DC. Do I need to perform Application Rationalization before DC upgrade from 2016 to 2019?


Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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  1. Thameur-BOURBITA 32,626 Reputation points

    Hi @Garima Das

    If you want upgrade your domain controllers from Windows 2016 to Windows 2019 , you have check if the following prerequisites of domain controller under Windows 2019 are already configured :

    1. Domain an forest Functional level is Windows 2008 R2 or higher
    2. DFS-R is the replication system for sysvol folder
    3. Check if all you application support communication with a domain controller under Windows 2019

    If you choose to replace a domain controller Windows 2016 by new server with new IP , you should check the delegation on infobox to allow new IP to register automatically its DNS records.

    Please on't forget to accept helpful answer

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  1. Daisy Zhou 21,046 Reputation points Microsoft Vendor

    Hello Garima Das,

    Thank you for posting in Q&A forum.

    There are several drivers for application rationalization for organizations, mostly centered around reducing redundancies, paying down technical debt, and getting a handle on growing costs.

    This is not necessarily required. However, you can perform App rationalization depending on the situation in your organization.

    For more information, please read links below.

    If you have any question or concern, please feel free to let us know.

    Best Regards,
    Daisy Zhou

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