Getting SEC_ERROR_BAD_SIGNATURE for every website I visit, running Windows Vista, its not my AV software that is causing the problem or family settings...
I've recently reinstalled and refreshed Firefox on my laptop, O/S Windows Vista. I'm unable to access any website the error details I get are as follows:
Secure Connection Failed
An error occurred during a connection to support.mozilla.org. Peer’s certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.
I am unable to add any exceptions.
I've followed the steps in troubleshooting articles to no avail! It's not my AV that's causing the issue or cookies/cache.
Can anyone advise further?
All Replies (2)
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/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
http://kb.mozillazine.org/Error_loading_websites
https://support.mozilla.org/kb/troubleshoot-SEC_ERROR_UNKNOWN_ISSUER
Hi Melatron, home users only rarely report the error code SEC_ERROR_BAD_SIGNATURE, but it sometimes is seen in a business network that proxies employees' access to the internet. Is that a possible factor here?
If you click SEC_ERROR_BAD_SIGNATURE on the error page, does Firefox then display a coded version of the certificates it's rejecting? If so, could you copy/paste that into a reply. What I want to do with it is enter in into the forms on sites like the following to display the issuer information from the certificate to see whether that points to the culprit: