Seems to happen randomly, but for some reason, I can't access Cpanel via the usual domain.com:2087 url.

The only way I know of to get it working again, is running the CPUP script from SSH and then it comes back up

Can someone advise as to what might cause this?

if I goto the URL, I get the security warning up, the password prompt, but then it just comes up with a Page cannot be displayed

SSL? Try restarting the service cpanel.

Thanks
Trying that now

Hmm no go
Port is enabled in the firewall
For some reason it just stops working, any idea what log file might tell me why?