We have a vCenter 6 and a vCenter 5.5 instance. vCenter 6 let's me verify the default self-signed cert. vCenter 5.5 when you click verify does nothing. When you go to servers, and edit the 5.5 it always gives this error:
"Possibly an invalid vCenter Server certificate. Please verify the identity of the associated vCenter Server."
I have tried uninstalling and reinstalling composer again to no avail. The "View Composer Servers" let's me verify the certificate. I'm guessing another bug with Horizon View 7.