Dear all, I have Windows 2003 Std SP2 running domain controller named: abc.com with IP 10.33.105.10 I did setup a new domain on Windows 2008 Std R2 named: def.com with IP 10.33.105.2 I get a trouble when i access \\10.10.10.1 by using Windows 7(workgroup) and Windows 2008 Std R2(running domain controller def.com) the problem appear as the picture http://pinlaptopvn.com/anh/1.JPG http://pinlaptopvn.com/anh/2.JPG How can i solve this issue ? Thanks and best regards Minh

According the pictures uploaded i can see you are trying to access 10.33.105.10 Which is Windows 2003 Server and you are getting authentication error becasue it show you are trying to connect 10.33.105.10\administrator Instead 10.33.105.10 please use the servername name along with the username Servername\administrator or else u may try this as well administrator@abc.com http://www.virmansec.com/blogs/skhairuddin

Try to use Servername\administrator like suggested Syed. Also, make sure that you client computer is using the right DNS server and that NetBIOS over TCP/IP is enabled. Don't forget to check that there is no firewall / router that is blocking traffic. 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

I am using the sugestion of Syed, but unfortunately for me, i still cann't access Windows 2003 from Win 7 or windows 2008 http://pinlaptopvn.com/anh/3.JPG http://pinlaptopvn.com/anh/4.JPG I checked around my system and find out that, the timezone on windows 7 and 2008 is UTC + 7, and windows 2003 is GTM +7 May the problem base on timezone ? How can i change UTC + 7 to GTM +7 ? Thanks and regards, Minh

There you go http://windows.microsoft.com/en-US/windows-vista/Set-the-clockhttp://www.virmansec.com/blogs/skhairuddin

Still error as pic 3,4 How can i fix this issue ?