Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

I keep getting an error message of "Your connection is not secure" for sites like facbook and twitter. They work fine in other browsers, but not firefox

  • 9 replies
  • 17 have this problem
  • 191 views
  • Last reply by philipp

more options

On the advanced tab it says "Error code: SEC_ERROR_UNKNOWN_ISSUER". I've done a refresh to Firefox and deleted the cert8.db file. I'm able to get to these sites just fine in other browsers and in Firefox on other computers. Any thoughts?

On the advanced tab it says "Error code: SEC_ERROR_UNKNOWN_ISSUER". I've done a refresh to Firefox and deleted the cert8.db file. I'm able to get to these sites just fine in other browsers and in Firefox on other computers. Any thoughts?

Chosen solution

no, your work is not blocking it, but they are intercepting/monitoring every secure connection you are opening - your firefox isn't properly configured to work with that apparently and therefore gives you an errors, because it cannot validate the "fake" certificates. again, your it department should be able to help out with that

Read this answer in context 👍 1

All Replies (9)

more options

Hi, sorry to hear you are having a problem; please see if anything here helps - How to troubleshoot security error codes on secure websites.

If your question is resolved by this or another answer, please take a minute to let us know. Thank you!

more options

I tried that several times before posting on here, no help

more options

hi, can you give us more information about the error by clicking on the error code, copying the text to the clipboard and then pasting it here into a reply in the forum (as shown in the screenshot).

thank you!

more options

https://facebook.com/

Peer’s Certificate issuer is not recognized.

HTTP Strict Transport Security: true HTTP Public Key Pinning: true

Certificate chain:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Modified by cor-el

more options

thank you, so it appears the affected device is in an enterprise environment where the certificates of legitimate websites are replaced with a different one in order to be able to monitor secure network traffic. it's probably best to get in contact with your it department on how to fix this issue and set up firefox to work in this kind of environment.

more options

Also: https://twitter.com/

Peer’s Certificate issuer is not recognized.

HTTP Strict Transport Security: true HTTP Public Key Pinning: true

Certificate chain:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Modified by cor-el

more options

same issue with twitter - that's no valid certificate from twitter you are seeing there but it's actually issued by:

Common Name (CN) sslrsa Organizational Unit (OU) IS Organization (O) CCHMC Locality (L) Cincinnati State (ST) OH Country (C) US

more options

Ok, so you are saying my work is blocking it? But they only block it in Firefox? I guess I'll just have to start using Chrome :(

more options

Chosen Solution

no, your work is not blocking it, but they are intercepting/monitoring every secure connection you are opening - your firefox isn't properly configured to work with that apparently and therefore gives you an errors, because it cannot validate the "fake" certificates. again, your it department should be able to help out with that