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Firefox shows ssl_error_bad_cert_domain, IE is working fine

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Hello,

i have a internal site where firefox shows an ssl_error_bad_cert_domain error. When i view the extended information, it told me that the certificate dont match to the site. But there is also an list of sites that are supported by this certificate, and this list includes exactly the url iam calling. Btw. all sites are included in the SAN attr of the certificate. There are other sites included in SAN that worked fine.

If i call the same site with IE11 it works fine as well.

Have someone an idea why firefox (68.2.0 esr) dont recognize the site?

Thanks!

Hello, i have a internal site where firefox shows an ssl_error_bad_cert_domain error. When i view the extended information, it told me that the certificate dont match to the site. But there is also an list of sites that are supported by this certificate, and this list includes exactly the url iam calling. Btw. all sites are included in the SAN attr of the certificate. There are other sites included in SAN that worked fine. If i call the same site with IE11 it works fine as well. Have someone an idea why firefox (68.2.0 esr) dont recognize the site? Thanks!
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Additional System Details

Application

  • User Agent: Mozilla/5.0 (Linux; Android 9; POCOPHONE F1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.116 Mobile Safari/537.36

More Information

FredMcD
  • Top 10 Contributor
4308 solutions 60514 answers

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

https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can

https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites

https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message

https://support.mozilla.org/en-US/kb/connection-untrusted-error-message

Websites don't load - troubleshoot and fix error messages

http://kb.mozillazine.org/Error_loading_websites

What do the security warning codes mean


  • MOZILLA_PKIX_ERROR_MITM_DETECTED
  • uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN
  • configured their website improperly

How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER

There is security software like Avast, Kaspersky, BitDefender and ESET that intercept secure connection certificates and send their own. https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites https://support.mozilla.org/en-US/kb/secure-connection-failed-error-message https://support.mozilla.org/en-US/kb/connection-untrusted-error-message [https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors?redirectlocale=en-US&redirectslug=Error+loading+web+sites Websites don't load - troubleshoot and fix error messages] http://kb.mozillazine.org/Error_loading_websites [https://support.mozilla.org/en-US/kb/what-does-your-connection-is-not-secure-mean What do the security warning codes mean] *MOZILLA_PKIX_ERROR_MITM_DETECTED *uses an invalid security certificate SSL_ERROR_BAD_CERT_DOMAIN *configured their website improperly How to troubleshoot the error code "SEC_ERROR_UNKNOWN_ISSUER" on secure websites https://support.mozilla.org/en-US/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER
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Question owner

There is no security software in use (only win defender). And some sites from the SAN attribute works fine, so if this is caused by security software i would except that no site from this certificate works.

There is no security software in use (only win defender). And some sites from the SAN attribute works fine, so if this is caused by security software i would except that no site from this certificate works.
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