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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

SEC_ERROR_UNKNOWN_ISSUER on school district website

  • 2 valiny
  • 1 manana an'ity olana ity
  • 10 views
  • Valiny farany nomen'i FredMcD

more options

When attempting to access https://www.muasd.org which is a school district website I get the warning message with the reason stated above as SEC_ERROR_UNKNOWN_ISSUER. This happens on version 79 also on the enterprise quantum version as well as android firefox app. We took a brand new computer out of the box installed firefox while connected to a phone hotspot and received the same error. All other browsers work fine. Any help would be appreciated.

When attempting to access https://www.muasd.org which is a school district website I get the warning message with the reason stated above as SEC_ERROR_UNKNOWN_ISSUER. This happens on version 79 also on the enterprise quantum version as well as android firefox app. We took a brand new computer out of the box installed firefox while connected to a phone hotspot and received the same error. All other browsers work fine. Any help would be appreciated.

All Replies (2)

more options
more options

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