Trying very hard to be nice here, BUT - the latest update (May 31) blew up any access to most secured sites, especially those that require HSTS (where no exception can be added - although that does NOT work anyway).
Avast version 11.2.2262, virus file 160601-0. Latest update of Firefox (46.0.1) - which is not the problem, they have not updated for a few weeks now; this started just as soon as I updated Avast.
Error message:
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The owner of support.avast.com has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.
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Adding to EXCLUSIONS does not work. ONLY turning off web shield works. Really???
Please email me with any answer. I will turn shields off later this evening so that I can actually access my email.
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Ah, an antivirus site that encourages spamming. Lovely. Well, e-mail removed.
Suppose the next step is to uninstall and reinstall - then if that does not work, look for something else after more than five years. At least I won't have to worry about forgetting to opt out of installing the Google malware (that took me three days to kill off the last time it happened).