Firefox updated yesterday and now I get Protocol Errors. Is there a bug?
Firefox updated itself yesterday and now it's sometimes reporting a Protocol Error when I try to open a website. Not always and it offers a Try Again button which usually works. So its not a serious problem for me but it is annoying and it suggests there is a fault in the new build.
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Please explain the problem in detail. What happens? What is the exact error messages?
There is security software like Avast, Kaspersky,
BitDefender and ESET that intercept secure
connection certificates and send their own.
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites
https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message
https://support.mozilla.org/en-US/kb/connection-untrusted-error-message