2

I cannot open some sites due to this error in Google Chrome (version: 48.0.2564.82 )
ERR_SSL_VERSION_OR_CIPHER_MISMATCH

It is an https site.
Windows 10.

Improve this question

2 Answers 2

Reset to default
2

The default SSL/TLS settings for browsers keep getting tightened to eliminate older settings that are no longer secure.

The site in question most likely is still using an old, insecure configuration that Chrome will not support.

Try putting the URL into this tool: https://www.ssllabs.com/ssltest/ to check it for issues.

Improve this answer
5
  • What information from this website is important to look at?
    – Imageree
    Jan 23, 2016 at 16:27
  • It would be easier if you could share the URL
    – Julian Knight
    Jan 23, 2016 at 16:41
  • 1
    You start by checking for anything in RED :)
    – Julian Knight
    Jan 23, 2016 at 16:57
  • Already found it I think :) "This server uses only RC4 suites, which are insecure. From early 2016, modern browsers won't connect to it." Thanks for your help.
    – Imageree
    Jan 24, 2016 at 13:36
  • Excellent, glad I could help. Now you just need to get the site owner(s) to update.
    – Julian Knight
    Jan 24, 2016 at 17:52
1

See may answer at https://superuser.com/a/1434714/182803, try to temporarily allow older TLS versions:

Disabling TLS 1.3 downgrade hardening in Chrome helped. open following URL in Chrome (works for version 74, but not for canary version 76): chrome://flags/#enforce-tls13-downgrade

In Firefox goto about:config and search for security.tls.version.fallback-limit set it temporarily to 1.

Make sure to return back to a more secure setting later.

Improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .