Firefox for Mac (latest version)
Yesterday I installed the latest download of Firefox for Mac. It appears that I cannot visit any website, because I always get the message that the certificate is issued by an unknown authority. I spent most of the day finding a solution and am fed up now with Ff. I found many help pages, suggesting to remove cert8.db when Ff is closed, to reset Ff and several other solutions. I tried them all but nothing worked. No Web page has a valid certificate according to Ff. I am well acquainted with Ff. I have used it for years on Windows, Linux and Android and never had problems of this kind. I'm am using Osx 10.10.3 (rolled out yesterday, April 9 2015 with the latest available Ff for Mac. (27.0.1) After spending a whole day at pointless troubleshooting only one question remains: Is Ff for Mac not compatible with the brand new Osx 10.10.3? Thanks. Rene Hasekamp.
Chosen solution
reneh said
In Avast I disabled the Web shield option "Scan Secure Connections". Now Firefox works
You should contact Avast support and ask about it. Other protection programs also have caused issues. Most get resolved by their support.
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Sorry, must be version 37.0.1 I think, not 27.0.1.
Today I tried one more thing I had not yet tried: In Avast I disabled the Web shield option "Scan Secure Connections". Now Firefox works as it should.
But I am not really happy with this solution. I believe I have diminished my online security now, oin order to be able to use Firefox.
Chosen Solution
reneh said
In Avast I disabled the Web shield option "Scan Secure Connections". Now Firefox works
You should contact Avast support and ask about it. Other protection programs also have caused issues. Most get resolved by their support.