![yahoo mail and avast certificate error yahoo mail and avast certificate error](https://support.postbox-inc.com/hc/en-us/article_attachments/202312960/avast-error.jpg)
I hope that I can get this resolved, because I'd rather keep using FF, which I've used for years, than switch to Chrome. (some of the other situations I've run across). The computer clock is correct, I'm not using Avast, etc. I have searched every database I could for answers, but have found no solution yet. It sometimes goes away on its own for a little while, but then returns.
![yahoo mail and avast certificate error yahoo mail and avast certificate error](https://iowacitytechnologyservices.files.wordpress.com/2017/03/20170311sa1747-avast-mac-apple-mail-server-certificate-error-open-home.jpg)
Sometimes, there is no problem and everything works fine.Ĭlearing history/cookies/cache and restarting does not fix the problem. This does not happen at home, so the company laptop has something to do with it, but, even on the company laptop I do not have this problem when using Chrome, so it's not that the company does not allow access to outside mail. The server might not be sending the appropriate intermediate certificates.Īn additional root certificate may need to be imported. The certificate is not trusted because the issuer certificate is unknown. As a result, it is not possible to add an exception for this certificate."
![yahoo mail and avast certificate error yahoo mail and avast certificate error](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2015-09-20-17-21-28-6c1c39.png)
"This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox only connect to it securely. "You have asked Firefox to connect securely to, but we can't confirm that your connection is secure."
#YAHOO MAIL AND AVAST CERTIFICATE ERROR WINDOWS#
When I log into Yahoo mail on Firefox 40.0.3 (on Windows 7) on my company-supplied laptop, I get this message: