Firefox won't allow connection when site certificate is invalid

[Patrick O'Callaghan]

On Fri, 2015-04-10 at 17:44 +0200, Suvayu Ali wrote:
> 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,

Thanks, I was hopeful but it didn't work, even after restarting FF.

poc