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I am getting ERR_SSL_VERSION_OR_CIPHER_MISMATCH error when opening github (specifically https://github.com/). Is something wrong with the server or is my browser set up incorrectly?

I have chrome 38 on Lubuntu 13.

Firefox 24 says:

Secure Connection Failed

An error occurred during a connection to github.com. Cannot communicate securely with peer: no common encryption algorithm(s). (Error code: ssl_error_no_cypher_overlap)

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  • Which exact URL are you pointing your browser at? Have you tried using some other browser, to rule out Chrome-specific issues?
    – user
    Dec 18, 2014 at 10:16
  • @MichaelKjörling https://github.com/
    – Kshitiz Sharma
    Dec 18, 2014 at 10:36
  • I have the same problem. Might be country specific.
    – vjdhama
    Dec 18, 2014 at 13:48
  • Errors on both mozilla and chrome.
    – vjdhama
    Dec 18, 2014 at 14:08

3 Answers 3

Reset to default
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For Chrome v40:

Open chrome://flags

Look for "Minimum SSL/TLS version supported."

Choose SSLv3

Click on "Relaunch now" button

Open your https page again

You will be redirected to a "Your connection is not private" page. If you do not worry about this security issue click on the "Advanced" link.

Finally click on "Proceed to (your https page) (unsafe)".

Solved.

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  • Not solved. This flag does not exist anymore, yet the error still remains.
    – NoCatharsis
    Nov 11, 2015 at 19:38
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I had the exact same problem using both Chrome version 46.0.2490.86 m and MS Edge on a Windows 10 laptop with the latest service pack installed and nothing helped until I uninstalled then reinstalled my Bitdefender antivirus. It now works perfectly!

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0

Latest versions of chrome and firefox disabled ssl3.0

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  • 3
    Actually this does a pretty good job of explaining the reason
    – Ramhound
    Feb 10, 2015 at 23:03

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