I have a Windows 2008 R2 server that joined the domain without issue. However, it is no longer using this domain controller as the logon server. It instead is using itself as the logon server. It can ping the domain controller and browse its file shares without issue.
This new server is actually going to be a Lync 2013 server and I noticed this problem when I went to prepare the Active Directory Schema. I received a message saying:
"Not Available: Failure occurred while attempting to check the schema state. Please ensure Active Directory is reachable"
There is actually only one domain controller on the domain right now that is on the local subnet with the new Lync Server.
Another potential symptom of the problem is that while I can ping the domain controller from the Lync server, I cannot ping the Lync Server from the domain controller. Using a Wireshark capture it shows the ping requests getting to the Lync server but the Lync server doesn't send any pings back.
Does anyone have any suggestions on what I can do to resolve?