can't log into ATT email on yahoo.com. Firefox says HSTS won't allow certificate exception
when tying to log into my att email account, I get a message that the certificate for yahoo.com is not trusted and that the site uses HSTS and Firefox won't allow an exception. This started immediately after installing Kaspersky Internet Security 2016. I'm using another machine to access my email account.
Выбранное решение
There is security software like Avast and Kaspersky and BitDefender and ESET that intercept secure connections and send their own certificate.
http://www.ehow.com/how_11385212_troubleshoot-reset-connection-firefox.html
https://support.mozilla.org/en-US/kb/server-not-found-connection-problem
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message
https://support.mozilla.org/en-US/kb/connection-untrusted-error-message
http://kb.mozillazine.org/Error_loading_websites
This Connection is Untrusted is sometimes caused because the computer system clock is wrong. Check the time / date / time zone settings.
Separate Issue; Your System Details shows;
Installed Plug-ins
Shockwave Flash 19.0 r0
Shockwave Flash 13.0 r0
Having more than one version of a program may cause issues.
You must remove the older programs. Then get the current full installer.
Note: Edge on Win10 does not use ActiveX version but its own Flash.
Flash: Grab the uninstaller from here: Uninstall Flash Player | Windows Uninstall Flash Player | Mac
Then reinstall the latest version.
Flash Player Version 19.0.0.245
https://www.adobe.com/products/flashplayer/distribution3.html
Note: Windows users should download the ‘’’active_x’’’ for “Internet Explorer,”
and the ‘’’plugin’’’ for “Plugin-based browsers” (like Firefox).
Adobe still offers Flash 18.0.0.255 as its extended support release further down
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Выбранное решение
There is security software like Avast and Kaspersky and BitDefender and ESET that intercept secure connections and send their own certificate.
http://www.ehow.com/how_11385212_troubleshoot-reset-connection-firefox.html
https://support.mozilla.org/en-US/kb/server-not-found-connection-problem
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message
https://support.mozilla.org/en-US/kb/connection-untrusted-error-message
http://kb.mozillazine.org/Error_loading_websites
This Connection is Untrusted is sometimes caused because the computer system clock is wrong. Check the time / date / time zone settings.
Separate Issue; Your System Details shows;
Installed Plug-ins
Shockwave Flash 19.0 r0
Shockwave Flash 13.0 r0
Having more than one version of a program may cause issues.
You must remove the older programs. Then get the current full installer.
Note: Edge on Win10 does not use ActiveX version but its own Flash.
Flash: Grab the uninstaller from here: Uninstall Flash Player | Windows Uninstall Flash Player | Mac
Then reinstall the latest version.
Flash Player Version 19.0.0.245
https://www.adobe.com/products/flashplayer/distribution3.html
Note: Windows users should download the ‘’’active_x’’’ for “Internet Explorer,”
and the ‘’’plugin’’’ for “Plugin-based browsers” (like Firefox).
Adobe still offers Flash 18.0.0.255 as its extended support release further down