My business laptop (Elitebook 8440p) was upgraded to WIN 7 Enterprise Edition, and now when I attempt to use my CAC to access my Government client's webmail I get continuous prompts to enter my smartcard pin. The CAC works OK on other computers (WIN VISTA and WIN 7 Professional) where I only need to enter the pin 1 time. Computer techs have been unable to ID the problem. Thanks! RufusTFirefly

Hi RufusTFirefly, Refer to this http://militarycac.com/noactivclientwindows7.htm. It gives the details information. Hope you find the clue. Regards, Miya Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.This posting is provided "AS IS" with no warranties, and confers no rights. | 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.