We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Firefox signature algorithm mismatch

  • 1 baphendule
  • 1 inale nkinga
  • 19 views
  • Igcine ukuphendulwa ngu guigs

ryanhundt
ryanhundt
more options

Running Firefox 39.0 on Windows 7 and get the following error when attempting to connect to some websites: The signature algorithm in the signature field of the certificate does not match the algorithm in its signatureAlgorithm field. (Error code: mozilla_pkix_error_signature_algorithm_mismatch) Got this today when trying to connect to Google.com

Running Firefox 39.0 on Windows 7 and get the following error when attempting to connect to some websites: The signature algorithm in the signature field of the certificate does not match the algorithm in its signatureAlgorithm field. (Error code: mozilla_pkix_error_signature_algorithm_mismatch) Got this today when trying to connect to Google.com

All Replies (1)

guigs
guigs
more options

HI ryanhundt, I apologize for the delay in response. There has been some updates to the internet this week. It is possible that the certificate that is not valid because of the mismatch. After testing it, it appears to have been resolved by Google's servers. Are you still seeing this issue, and if so, what are the two algorithms that display with you right click on the page, select "Page Info" and click on the security tab.