Authentication Server could not be contacted

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2 answers

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network macos osx-server dns active-directory

                          Our OS X Server machine has had no issue at all with being in the Windows AD domain right up until we updated it to OS X 10.10. Now it behaves bizarrely, refuses to connect to our Exchange mail server, and even rejects the DNS lookup for all of the other servers on the network.

I tried removing and readding the Server to the domain, but I get

"Unable to add server.

Authentication server could not be contacted (5200)"

Is there any way of finding out what the solution may be?

Asked by Josh (241 rep)

Nov 10, 2014, 12:33 PM
Last activity: Oct 2, 2020, 05:32 PM

Authentication Server could not be contacted

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