@kpa:
If you happened to have a self-signed certificate that was created before the change linked below the newer browsers definitely didn't like it because they now require the FQDN of the system in the SubjectAltName field of the certificate.
Which is where we came in :)
I don't think I will start any arguments about whether Chrome is an upstart baby browser or fully mature 9 year old browser which eclipses all other browsers by market share
I meant newer versions of the mainstream browsers, not any of the completely new browsers or new forks of the existing ones. Chrome did what they had to with the validation requirements, hence the issue.