Can't access Wikipedia/Wikimedia websites anymore (TLS VERSION ISSUE)
So Wikipedia is blocking my browser for a while now (whenever I try to access any links it redirect me to https://en.wikipedia.org/sec-warning ), previously I was able to solve this issue on my own by setting the security.tls.version.min to 3 on the about:config page but now the problem returned and I don't know why or how to fix it. PLEASE HELP!
Modified by Ednilson
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Websites say that Firefox is outdated or incompatible even though it's the latest version https://support.mozilla.org/en-US/kb/websites-say-firefox-outdated-or-incompatible
This article is no longer maintained, so its content might be out of date.
Also,
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
Websites don't load - troubleshoot and fix error messages