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Getting "Secure Connection Failed" message on site that works fine in Chrome and has an A+ from Qualys SSL Labs and Mozilla Observatory

When trying to load my personal Nextcloud instance, I receive the error in the title. I have tested the site every way I can think of, but the site's security is fine. Th… (read more)

When trying to load my personal Nextcloud instance, I receive the error in the title. I have tested the site every way I can think of, but the site's security is fine. The site loads fine in Chrome and on the Android version of Firefox. When using chrome://pippki/content/exceptionDialog.xul , I received the error "This site attempts to identify itself with invalid information." Only problem is, after looking through the cert, I can't find anything that's invalid. I have attached everything I can think of that's relevant.

I have tried a new profile (same error), Safe Mode (same error), disabling security.ssl.enable_ocsp_stapling in about:config, disabling my antimalware (Windows Defender), and refreshing Firefox. I don't know what else I can do to try and fix this.

Asked by aveilleux 1 year ago

Answered by aveilleux 1 year ago

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unable establish a connection with following cipher suit "<Attr name="Ciphers" type="nstr" value="DHE:ECDHE:!SSLv3:TLSv1.2:!ADH:!aNULL:!AES128"/>"

duplicate of https://support.mozilla.org/en-US/questions/1213709 - locking unable establish a connection with a server with following cipher suite "<Attr name="Ciphers… (read more)

duplicate of https://support.mozilla.org/en-US/questions/1213709 - locking

unable establish a connection with a server with following cipher suite "<Attr name="Ciphers" type="nstr" value="DHE:ECDHE:!SSLv3:TLSv1.2:!ADH:!aNULL:!AES128"/>"

Tested server suite: All combination of DHE: ECDHE without SSL Tested browsers (successful): edge, Chrome

Firefox error: Secure Connection Failed

An error occurred during a connection to 10.57.108.132:10443. Cannot communicate securely with peer: no common encryption algorithm(s). Error code: SSL_ERROR_NO_CYPHER_OVERLAP

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Learn more…

Report errors like this to help Mozilla identify and block malicious sites


Type of connection: HTTPS

Asked by anurajsreenivasan 2 years ago

Last reply by FredMcD 2 years ago

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untrusted connection! (On Google)

Locking duplicate thread.Please continue here: [/questions/1091977] When I search for something on Google using the search bar it says Untrusted Connection, and it doesn… (read more)

Locking duplicate thread.
Please continue here: [/questions/1091977]

When I search for something on Google using the search bar it says Untrusted Connection, and it doesn't let me "Understand the Risks" and go through. I'm able to get to Google.com but when I search for something it comes up glitched looking (Shows the old Google Logo, etc.) it doesn't let me use the features such as Images, News, Search tools. It automatically goes to Untrusted connection.

Also when I go to Google.com it says Not Secure Connection.

Asked by LMAO 4 years ago

Last reply by FredMcD 4 years ago