Hello All , Lucid, I have errors in event log in my windows 2000 Adv. server ( Using ADS). please help me to solve this problem. ---------------- Registration of the DNS record 'gc._msdcs.i-link.co.in. 600 IN A 203.77.198.84' failed with the following error: DNS server not authoritative for zone. ---------------- Because of repeated network problems, the time service has not been able to find a domain controller to synchronize with for a long time. To reduce network traffic, the time service will wait 960 minutes before trying again. No synchronization will take place during this interval, even if network connectivity is restored. Accumulated time errors may cause certain network operations to fail. To tell the time service that network connectivity has been restored and that it should resynchronize, execute "w32tm /s" from the command line. -------------------- Registration of the DNS record 'gc._msdcs.i-link.co.in. 600 IN A 192.168.0.25' failed with the following error: DNS server not authoritative for zone. Please help me to solve this problem , becouse of this i think some of my other system lost connection with Domain.

Is this the only domain controller on the domain?

Thanks Mickael for reply, Yes it only one domain controller in domain. I have win2k Adv. Server as domain controller and other 15 systems Win2k pro and winXP pro., so pls tell me if you know solution , I only use this DC for login and file server. but sometimes client system means win2k pro and winXP pro lost connection with server. specially win XP pro lost connection with DC after logged in domain. please reply me. Thanks for your help.