I am setting sharepoint 2013 single server farm for training and learning purposes and while clicking on "Promote this server to a domain controller", i am getting error, please see below screenshots.Can someone please assist?

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In short, The forest root domain name consists of two parts prefix.suffix, you are tried to set the forest root domain name to a single label domain name so you got this error!

Read more about Assigning Domain Names

In your case (Learning environment), try to set forest root domain name as


Note: Installing the AD role on the same Standalone SharePoint server will work but it's recommended to install the AD role in an independent server (VM) to avoid the performance issue.

  • Thanks Mohammed, I will give that a try. Thanks for the note as well, I am currently in the learning phase, so part of my SharePoint admin training, i am going through the setup and all but will keep this in mind from a production environment. – mdevm Sep 10 '18 at 13:11
  • Okay, Great @mdevm . Please, don't forget to upvote and mark the answer as accepted in case it helped you? Thanks! – Mohamed El-Qassas MVP Sep 10 '18 at 14:59

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