I'm trying to install a wildcard SSL Certificate on IIS7. I followed your installation guide: https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1205
However, after step 4 I get stuck. The certificate is added to the list, but when I refresh it, it dissapears again.
It's a wildcard SSL, I don't know if this matters.