2014 Active Directory: Troubleshooting with DcDiag (part 2) 4 Dec Active Directory: Troubleshooting with DcDiag (part 1) 29 Nov Active Directory: Domain Controller critical services 25 Nov DNS zone expired before it could be updated 29 Aug 2012 NSLookup doesn’t query the alternate name servers 16 Dec Missing AD SRV records 3 Dec