Hi,
Part of our site (asp.net 2.0, IIS 6 on Win2003) allows clients to be authenticated using client certificates (http://www.unipass.co.uk/About.aspx).
IIS has been properly configured to require SSL/128-bit encription and client certificates. When the page is requested, the pop-up to select client certificates is properly displayed, and after the selection of the valid certificate, everything works as it should.
However, if the user chooses the "cancel" button on the certificate pop-up the white page is displayed saying only:
Secure Ch ...
Go to the complete details ...