Upgrade domain controllers to a newer version of Windows Server

Question

https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/upgrade-domain-controllers

Step 5: On the Deployment Configuration screen, select Add a new domain to an existing forest and select Next.

It should be the first choice: Add a domain controller to an existing domain

Right?
Thanks.

Answer 1

Hi @Emma Yoyo ,

You are right.

You should select "Add a domain controller to an exising domain" if you are making the upgrade process.

Answer 2

Hello EmmaYoyo,

In this case, the information is correct to Add a New Domain controller upgrading your environment, as if you are adding the Domain controller to your Forest Root domain (for example "Contoso .com") and the operation needs to upgrade the Forest Functional Level, not only the Domain Functional Level.

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