Facebook connectivity

[David Woolley]

On 26/09/14 00:57, Lord Flame Stryke wrote:

> Is this a Pidgin issue, or a Facebook issue?  If it’s a Pidgin issue, is
> there something I can do to resolve this?

If you get an unexplained certificate error you should assume that you 
are under a man in the middle attack, until you have convinced yourself 
otherwise.

Your first highlighted line indicates that the certificate Facebook 
presented is not one you have seen previously from them.  The second 
highlighted line indicates that you do not have the root certificate 
installed for the alleged signer of the that certificate.

You need to obtain that certificate by secure means, convince yourself 
that they are reliable and appropriate people to authenticate Facebook 
servers, and install it.

Some information on how to install a root certificate that you trust, on 
Windows Pidgin, can be found at 
<https://developer.pidgin.im/wiki/MSNCertIssue>.

You should not rely on mailing lists like this to tell you whether you 
can trust any particular certificate as posters here are not 
authenticated or vetted.