Hey guys!
I'm kind of a newbie in VMWare administration and a got this errors while enabling vCHA. My peer and witness was created just fine, but at the end of vCHA deploy it show this error "Failed to start HACore profile on node". Also in the vCenter HA session the buttons "edit" and "initiate failover" was visible but not enable.
I was not feeling very brave to do this kind of alterations so I try to reboot my active vCenter node (i had a backup in case it didn't comeback) and work just fine!
A was able to activate the vCHA with no errors.
Hope my experience help someone.