IIS 7 Error “A specified logon session does not exist. It may already have been terminated.” when using https

Question

I am trying to create Client Certificates Authentication for my asp.net Website.

In order to create client certificates, I need to create a Certificate Authority first:<

Answer 1

This must be some kind of IIS bug, but I found the solution.

1- Export MyPersonalCA.pfx from IIS.

2- Convert it to .pem:

openssl pkcs12 -in MyPersonalCA.pfx -out MyPersonalCA.pem -nodes

3- Convert it back to .pfx:

openssl pkcs12 -export -in MyPersonalCA.pem -inkey MyPersonalCA.pem -out MyPersonalCA.pfx

4- Import it back to IIS.