Dear Experts I am in migration process from Windows 2003 to Windows 2008 R2. we have created a new domain for Windows 2008 R2 and created TRUST between both the domain. 1. I change the Old domain on the USer computer and ask to login with new credentials of new domain it works fine. 2. When the user want to login on old domain they get following error. We use ETOKEN with Microsoft CA as smart card login THE SYSTEM COULD NOT LOG YOU ON. AN UNTRUSTED CA WAS DETECTED WHILE PROCESSING. THE DOMAIN CONTROLLER CERFITICATE USED FOR AUTHENTICATION . kindly help Best regards Sharad

Hi, you must install certificate in your computer.

Hi Sharad, This issue is related to Windows Server. The best resource in answering the question is Windows Server Forum. Thank you for your understanding. Regards, Linda Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.