Hi, I am using Windows 7 client with outlook 2007 and connected to Windows 2008 server with Exchange 2007. All windows 7 clients are prompting the user name and password the same time if i try to ping or access (RDP, UNC) exchange server will not responds from Win 7 PC. All windows XP computers working fine with the same Exhchange server. If i try from XP or windows 2008, or 2003 server i can connect to exchange server. Once i disable and enable the win 7 NIC then i will be able to connect to the Exchange server or after few min connection will restore. I tried to disable the Win firewall on the pc and remove the outlook anywhere option, disable the encrypt communication with exchange server and outlook, but no luck, any idea about this issue kindly update me. Thanks Binosh binosh1@hotmail.com

Hello, have you tried to update the NIC's drivers? I'd also try to replace the NIC if that doesn't work.... Greetings, Toni

Hello, How often does this issue happen? Does it happen right after resuming from the hibernation mode? When the issue happen, can you use other application, such as IE, MSN, properly? Thanks, Simon

Hi Toni, I tried NIC drivers but no luck, and its happens all windows 7 computers. Thanks Binosh binosh1@hotmail.com

Hi Simon, Once i starts the PC its happens, and after sometime outlook will establish the connection same time i can ping to server, again after few min it will disconnect and i will not able to ping or access the mail server. Thanks Binosh binosh1@hotmail.com

Hello, Then it should be a network issue, I recommend we consult the Windows Sever support or Windows Server Forum via: http://social.technet.microsoft.com/Forums/en/category/windowsserver/ Thanks, Simon

Hello, Then it should be a network issue, I recommend we consult the Windows Sever support or Windows Server Forum via: http://social.technet.microsoft.com/Forums/en/category/windowsserver/ Thanks, Simon