By Lex Li
This page shows you how to use SSL Diagnostics.
IIS 6 used to have a great troubleshooting tool called SSL Diagnostics (SSL Diag for short) . It relied on IIS ADSI API, so this tool was not made part of IIS 7 and above.
Of course you can use the IIS 6 version if you enable IIS 6 Compatibility component on IIS 7 and above, but it would be less convenient.
A Microsoft employee Vijayshinva Karnure developed a newer version that relied only on IIS 7+ new API, and released it on IIS.net .
It works for all IIS versions (up to 10), but it does not work for IIS Express.