Dear Friends, I tried to connect to my Exchange server 2010 by using outlook 2003 SP3, but it not accepted password.it prompt password again and again. I checked it by changing setting but no success. I checked it by configuring on outlook 2007 & 2010,its working fine,i only faces problem in outlook 2003. Any solution Thanks & Regards, pradip

Please provide more information, such as how you are configuring the profile.Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."

Hi, Resolved problem by installing root certificate on client machine. Thanks, Pradip

Thanks for sharing CheersZi Feng TechNet Community Support