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How to disable TLS 1.0 and 1.1 support which Firefox did in recent update but I accidentally enabled it while visiting a site

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I know Firefox disabled TLS 1.0 and 1.1 support in recent update. But while visiting site with TLS 1.0 support, Firefox asked me to enable it. I accidentally clicked to enable it. But now I want to disable it again. How to do that?

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langalia.kartik said

I know Firefox disabled TLS 1.0 and 1.1 support in recent update. But while visiting site with TLS 1.0 support, Firefox asked me to enable it. I accidentally clicked to enable it. But now I want to disable it again. How to do that?

Hello langalia.kartik,

You can check the values of the preferences :

security.tls.version.min

and

security.tls.version.max

As described in this article :

https://www.ghacks.net/2019/09/29/mozilla-disables-tls-1-0-and-1-1-in-firefox-nightly-in-preparation-of-deprecation/