Is there a way to script removal of personal certificates? We have a few computers in a lab with local provider access to the Internet. The users log onto some secure sites with Smart cards, so their certificates are captured. After several people and a few days, this can add up, and it becomes very difficult to find your certificate amongst so many. I know that you can use the Internet options panel to remove certificates, but is it possible to automate this, like a logoff script? I tried certmgr, but it just opened the GUI, and certmgr.exe did not work at all. I removed the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\SystemCertificates\MY\Certificates, but that had to be the wrong location, because the certs are still there. I would appreciate any help you could give me on this matter. Thanks.