Firefox won't allow connection when site certificate is invalid

[Suvayu Ali]

On Fri, Apr 10, 2015 at 02:08:35PM +0000, Joshua Doll wrote:
> On Fri, Apr 10, 2015 at 8:14 AM Patrick O'Callaghan <pocallaghan at gmail.com>
> wrote:
> 
> > I need to use Firefox to connect to a specific site which has an
> > unrecognized SSL certificate (the specific error is "Peer's Certificate
> > issuer is not recognised"). I get the usual dialogue asking if I accept
> > the risks, but clicking on the Add Exception button does nothing. This
> > is FF 37.0.1 on F21.
> >
> > This specific site only works with FF and IE. It used to work with
> > previous versions of FF, but I last used it weeks ago so I can't be sure
> > which exact version introduced the breakage. I've already tried running
> > in safe mode, to no avail.
> >
> Is the cert also expired. I've run into where if the cert is self signed,
> or from an untrusted CA and expired it won't let you accept the cert.

Try unchecking the "Query OCSP ..." box under Advanced > Certificates.

Hope this helps,

-- 
Suvayu

Open source is the future. It sets us free.