Hi, Also, since your issue is related to Windows Server, It is better to ask at Server forums. Please post a thread at http://social.technet.microsoft.com/Forums/en-US/winserverNIS/threads for help.Juke Chou TechNet Community Support

We just upgraded 40 workstations in our CAD student lab to windows 7. The computers appear to register themselves in DNS as I can ping the fully qualified name. However, a period of time (hours to a day) later, the DNS record appear to have been removed as I can no longer ping them by fully qualified name and nslookup doesn't find them in the name server either. Some times this will manifest itself after a reboot but other times it seems to happen spontaneously. I did look at the DNS event log but didn't see any errors or warnings over the time frame in question. I did also look for the host records and they do not appear to be there. As far as I know, these are the only clients affected. I tripped across this because we are trying to schedule a weekly reboot from the domain controller using the fully qualified name. Can someone suggest a method for troubleshooting this? Thanks, Steve

Two things come to my mind 1. dns scavenging is enabled and it is removing the records (check the properties for scavenging and see how often it runs) 2. you are having some replication problems with your active directory (once you have the records in DNS try forcing replication)

Thanks!! I will check those two items out. There is only 1 DNS server so I wouldn't think there is a replication issue but scavenging seems the likely cause.

Hi, Also, since your issue is related to Windows Server, It is better to ask at Server forums. Please post a thread at http://social.technet.microsoft.com/Forums/en-US/winserverNIS/threads for help.Juke Chou TechNet Community Support