<![CDATA[How enable TLS 1 in Opera GX LVL3 (core: 84.0.4316.36)?]]>How enable TLS 1 in Opera GX LVL3 (core: 84.0.4316.36)?

I am trying to enter a page that expired its certificate and it sends me the error:

ERR_SSL_VERSION_OR_CIPHER_MISMATCH

I have read through several pages and they recommend me to enable TLS 1 but I can't find the option.

]]>https://forums.opera.com/topic/54686/how-enable-tls-1-in-opera-gx-lvl3-core-84-0-4316-36RSS for NodeSat, 07 Mar 2026 19:02:49 GMTTue, 15 Mar 2022 22:26:10 GMT60<![CDATA[Reply to How enable TLS 1 in Opera GX LVL3 (core: 84.0.4316.36)? on Tue, 01 Nov 2022 16:10:00 GMT]]>Dunno if you solved the issue but...

  • Download Firefox (seriously Opera needs this feature)
  • In the url box type "about:config" without quotes
  • Accept the risk warning
  • In the search box type "security.tls.version.enable-deprecated" without quotes
  • Switch the value to "True"
]]>https://forums.opera.com/post/292717https://forums.opera.com/post/292717Tue, 01 Nov 2022 16:10:00 GMT<![CDATA[Reply to How enable TLS 1 in Opera GX LVL3 (core: 84.0.4316.36)? on Tue, 29 Mar 2022 18:58:51 GMT]]>@mardorosal See if the device can be updated to use TLS 1.2 or 1.3 the older TLS versions are being dropped support wise in all modern browsers.

The other option might be a VM with a outdated browser (which does pose a security risk)

]]>https://forums.opera.com/post/277793https://forums.opera.com/post/277793Tue, 29 Mar 2022 18:58:51 GMT<![CDATA[Reply to How enable TLS 1 in Opera GX LVL3 (core: 84.0.4316.36)? on Tue, 29 Mar 2022 15:32:01 GMT]]>@leocg Hello,
I have a telecommunications device that uses it, it does not require internet

]]>https://forums.opera.com/post/277780https://forums.opera.com/post/277780Tue, 29 Mar 2022 15:32:01 GMT<![CDATA[Reply to How enable TLS 1 in Opera GX LVL3 (core: 84.0.4316.36)? on Wed, 16 Mar 2022 00:43:05 GMT]]>@mardorosal TLS 1.0 was deprecated a while ago, (I guess) no browser still uses it.

]]>https://forums.opera.com/post/276813https://forums.opera.com/post/276813Wed, 16 Mar 2022 00:43:05 GMT