After installing .NET3.5: So if you *really* need your cards then make a backup before installing .NET3.5 . The new - polluted - IE7 user agent string: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 3.0.04324.17; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022) I copied it from the latest xmldap.org relyingparty . It outputs the user agent string to make documenting the interop tests easier. Please notice that this is no-SSL. Read More...