Hi Dan, yes, I did big searching :-) but without answer. I think that client certificate is not allowed method for user authentication / login. Thanks for your answer, Michal

Server certificate under IIS (allow https trafic) and client certificate to allow log on without need to enter user login and password - for authenticating is used user certificate.

I have no problem with ssl connection - yes it works great, but I have problem with connection to the Project Server 2007 via proxy, which needs authenticate by personal certificate. For me it works only for PWA but not for Project Pro. When opening PWA site, I am prompted for user certificate, click OK and I am logged in to the PWA site. When trying to connect via Project Pro, and check “Use Windows account”, the certificate promp is displayed (like in PWA site), click OK, then certificate prompt is displayed again, click OK, then again and again (four times). Then the message window

“Project was not able to connect to Project Server because of the following error:
Project Server could not be contacted.
If you retry and still unable to connect, try the following:
- Check your network connection and see if you are able to connect to other websites
- Check the URL of Project Server you are trying to connect
- Use Internet Explorer and make sure you can connect to Project Web Access
- Contact your server administrator for futher assistance

When I check forms auth. it is the same behaviour. You can simulate this error window, when type wrong server name in Project Server url box (Account Properities).

Thanks
Michal

What type of error are you receiveing Michalriha?

For those who were wondering, yes, SSL can be utilized for the connection as well. I recently set up an extranet in this manner, where remote users can connect via Project Profession over the WAN via SSL connection.

Is it possible to connect to server using SSL and client certificate? For me it does not work.