I have a new 2012 R2 Domain Controller and Exchange 2013 server running on Server 2012 R2. I have a few Windows XP clients that for some reason as of Monday cannot browse or access the file shares on the Domain Controller. However they can still access the shares on the Exchange server. SMBv1 appears to be enabled on the Domain Controller and the Windows Firewall is off so I do not know what the issue is. DNS is working and I can ping the server from the client without any issues. The Windows Vista/7 workstations can access the server without any issues.
Vincent Sprague