Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

when i try to sign in to sync, this message appears " An error occurred during a connection to accounts.firefox.com. Peer's certificate has an invalid signature

  • 1 reply
  • 4 have this problem
  • 10 views
  • Last reply by guigs

more options

i try to sign in to sync but the page doesn't load this message appear Secure Connection Failed

An error occurred during a connection to accounts.firefox.com. Peer's certificate has an invalid signature. (Error code: sec_error_bad_signature) note: other sites and pages load normally

i try to sign in to sync but the page doesn't load this message appear Secure Connection Failed An error occurred during a connection to accounts.firefox.com. Peer's certificate has an invalid signature. (Error code: sec_error_bad_signature) note: other sites and pages load normally

All Replies (1)

more options

Hi crymuch, Please disconnect the account from the profile in your Firefox Menu. Since there is a certificate error you might also need to delete the signin file from the profile folder.

The file name is signedInUser.json. Once deleted, sign in once more to the site.(If you still get the cert error, go to about:permissions and search for accounts.firefox.com and select "Forget this Site")