Dear all, My DNS was working fine until today after an update ocurs for Server 2008 SP1 which actually failed When I rune the nslookup I have the following results: > nslookup solatys.local Server: solatys.local Address: 192.168.1.102 *** solatys.local can't find nslookup: Non-existent domain >Your knowledge is enhanced by that of others.

Proceed like that: Make sure that each DC / DNS server point to itself as primary one Make sure that each DC without DNS point to the correct DNS server as primary one Run net.exe stop netlogon & net.exe start netlogon command on all DCs Make sure that your client computers are using internal DNS server as primary one Make sure that you don't have connectivity problems If the problem persists, disable all security softwares and check again. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration

Hello, please post an unedited ipconfig /all from the DC/DNS server in question and also other existing DC/DNS machines. If you use a client for testing please also from this one.Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

now it works, they was an update of Server 2008 R2 SP1 which fail to intsall on the server. I restart it and stop that update and works aginYour knowledge is enhanced by that of others.

Thanks for your kind offer I am very new I have no any idea? Thanks Gamini