Missing host in SSL setting window

Hello everyone,

I was about to upgrade my vCenter from 4.1 to 5.1 and the upgrade came with this popup massage asking me to set the SSLverification.

So I went to the Admin menue ==> vCenter server settings ==> SSL settings, but I can't see all my hosts, I have 2 active connected hosts and I see only one of them. I checked on both hosts under /etc/vmware/ssl and I have the crt and key files.

Anyone know why I don't see my second host or how can I add it?

Is there a way to upgrade 4.1 to 5.1 without SSL enable? I'm working in local and closed environment and I realy don't need all this security addons...

Thanks!