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I created Domain Controller role running inside a guest operating system on a Hyper-V host server. Tried to add that same Hyper-V host server to the domain of the guest virtual machine that Hyper-V hosts, but I get the following message:

The following error occured attempting to join the domain "mydomain": The specified domain either does not exist or coult not be contacted

It does ask me for username and password if I try to join "mydomain", but joining "mydomain.local" gives an immediate error that says there's no such domain, basically.

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