Can't connect after reinstalling Firefox - related to Avast
After reinstalling Firefox, I get "invalid security certificate....Error code: SEC_ERROR_UNKNOWN_ISSUER" messages for every web page I try to load. It is related to the Web Shield being enabled in Avast. Firefox works when Web Shield is disabled.
However, the steps Mozilla/Firefox lists here https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER to fix the problem do not work, and the functions are not even in the current version of Avast.
Not sure what to do.
Giải pháp được chọn
Avast or any A/V program will update automatically and sometimes they will break or block sites without telling you. And since it's every page I would suspect the A/V is causing the problem. As you noted turning off Web Shield stops it so my advice find a better A/V that doesn't think it knows better then you know your web browsing habits.
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Giải pháp được chọn
Avast or any A/V program will update automatically and sometimes they will break or block sites without telling you. And since it's every page I would suspect the A/V is causing the problem. As you noted turning off Web Shield stops it so my advice find a better A/V that doesn't think it knows better then you know your web browsing habits.
Thanks for the reply. What I don't understand is why Avast would start doing this after reinstalling Firefox, and why other browsers are not affected. Firefox was working fine with Avast before. Now I can't even reach the Mozilla site with Firefox.