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

My website works fine on Chrome, but on Firefox there's a `SEC_ERROR_UNKNOWN_ISSUER` error with my SSL certificate.

  • 4 replies
  • 1 has this problem
  • 9 views
  • Last reply by FredMcD

more options

My website is https://miroware.io/. In Chrome, it loads fine, and the SSL certificate works perfectly. In Firefox, there's an error. The section at https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_missing-intermediate-certificate explains what the error is, but not how to fix it. Can I fix it? If so, how?

My website is https://miroware.io/. In Chrome, it loads fine, and the SSL certificate works perfectly. In Firefox, there's an error. The section at https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER#w_missing-intermediate-certificate explains what the error is, but not how to fix it. Can I fix it? If so, how?
Attached screenshots

Chosen solution

Oh! Never mind. I fixed it by applying a CA value in my Node server, setting it to my `chain.pem` file.

Read this answer in context 👍 0

All Replies (4)

more options

Chosen Solution

Oh! Never mind. I fixed it by applying a CA value in my Node server, setting it to my `chain.pem` file.

more options

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate.


https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

Modified by FredMcD

more options

FredMcD said

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connections and send their own certificate. https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

I don't use any of this software and have already solved the issue myself. See above.

more options

That was very good work. Well done.