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.

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

firefox "services.addons.mozilla.org uses invalid security certificate the certificate is valid to *.google.com, google.com" I cant download any plugin. I have this problem for months and the error code is "ssl_error_bad_cert_domain"

  • 2 cavab
  • 234 have this problem
  • 1 view
  • Last reply by cor-el

more options

firefox "services.addons.mozilla.org uses invalid security certificate the certificate is valid to *.google.com, google.com." I cant download any plugin. I have this problem for months and the error code is "ssl_error_bad_cert_domain"

This happened

A few times a week

firefox "services.addons.mozilla.org uses invalid security certificate the certificate is valid to *.google.com, google.com." I cant download any plugin. I have this problem for months and the error code is "ssl_error_bad_cert_domain" == This happened == A few times a week

All Replies (2)

more options

Check the date on your computer. Control panel > Date & Time

more options

Rename cert8.db (cert8.db.old) in the Profile Folder in case there is a problem with the files.

The file cert8.db stores your user certificates, so if you have user certificates then you may want to export them now and import them after having removed cert8.db.

See Tools > Options > Advanced > Encryption: Certificates: View Certificates

If that works then you can delete the renamed file or undo the changes if you want to revert the process.


You can also try "Reset all user preferences to Firefox defaults" on the Safe mode start window

See also Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems