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

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  • Last reply by FredMcD

user1408638
user1408638
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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?
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Chosen solution

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

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user1408638
user1408638 Question owner
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Chosen Solution

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

FredMcD
FredMcD
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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

user1408638
user1408638 Question owner
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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.

FredMcD
FredMcD
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That was very good work. Well done.