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what is oldest Firefox version to support TLS 1.2

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I want to know what is the oldest version of Firefox to support TLS 1.2. What about version 48 ? Thanks !

I want to know what is the oldest version of Firefox to support TLS 1.2. What about version 48 ? Thanks !

被選擇的解決方法

Hello Pat07,

The oldest Firefox that supports TLS 1.2 is Firefox version 23, but I'm definately not going to suggest to use an older Firefox version .....

NOT recommended, but you can set any Firefox version to
use TLS 1.2 :

Type in the address bar about:config and press Enter (promise to be careful, is asked)

Type in the search bar security.tls.version.max

and set its value to 3

Then close and restart Firefox.

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WestEnd 60 個解決方法 5387 個答案

You have to provides links to what your talking about if you want others to read and see what and where your getting those information at?

You have to provides links to what your talking about if you want others to read and see what and where your getting those information at?
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McCoy
  • Top 10 Contributor
545 個解決方法 5143 個答案

選擇的解決方法

Hello Pat07,

The oldest Firefox that supports TLS 1.2 is Firefox version 23, but I'm definately not going to suggest to use an older Firefox version .....

NOT recommended, but you can set any Firefox version to
use TLS 1.2 :

Type in the address bar about:config and press Enter (promise to be careful, is asked)

Type in the search bar security.tls.version.max

and set its value to 3

Then close and restart Firefox.

Hello Pat07, The oldest Firefox that supports TLS 1.2 is Firefox version 23, but I'm definately not going to suggest to use an older Firefox version ..... NOT recommended, but you can set any Firefox version to <BR>use TLS 1.2 : Type in the address bar '''about:config''' and press Enter (promise to be careful, is asked) Type in the search bar '''security.tls.version.max''' and set its value to '''3''' Then close and restart Firefox.
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提出問題者

Thanks #McCoy !

Thanks #McCoy !
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McCoy
  • Top 10 Contributor
545 個解決方法 5143 個答案

Pat07 said

Thanks #McCoy !

My pleasure  !

''Pat07 [[#answer-1232416|said]]'' <blockquote> Thanks #McCoy ! </blockquote> My pleasure !
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cor-el
  • Top 10 Contributor
  • Moderator
17539 個解決方法 158588 個答案

Actually this enabling TLS 1.2 (and TLS 1.1) happened in Firefox 27 (TLS 1.1 was skipped).

Bug 861266 - Implement TLS 1.2 (RFC 5246) in Gecko (Firefox, Thunderbird), on by default [27]

You shouldn't set security.tls.version.max to a value higher than its current default. If a higher TLS version isn't enabled in Firefox then this is done for a reason (stability or unfinished support). This happened with TLS 1.3 for a long time (52-59) that got only enabled in Firefox 59 as a test and by default in 60and later.

Actually this enabling TLS 1.2 (and TLS 1.1) happened in Firefox 27 (TLS 1.1 was skipped). Bug 861266 - Implement TLS 1.2 (RFC 5246) in Gecko (Firefox, Thunderbird), on by default [27] You shouldn't set security.tls.version.max to a value higher than its current default. If a higher TLS version isn't enabled in Firefox then this is done for a reason (stability or unfinished support). This happened with TLS 1.3 for a long time (52-59) that got only enabled in Firefox 59 as a test and by default in 60and later.
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