Error code: SEC_ERROR_INADEQUATE_KEY_USAGE
Hello,
I would like to ask you about error code that I got after last firefox upgrade to 78.3.1esr (64-bit). Everytime I go to certain websites I get this error message:
Error code: SEC_ERROR_INADEQUATE_KEY_USAGE
Please, can someone advise about this? I do not see any known bug with this code. I did not have this problem before this upgrade.
Thank you, Martin
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From my research, it looks like a certificate issue. https://www.bing.com/search?q=SEC_ERROR_INADEQUATE_KEY_USAGE
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
See:
- Bug 1590217 - FF presents SSL Error: SEC_ERROR_INADEQUATE_KEY_USAGE