My sign in was “blocked for security reasons” on Mozilla account
Mozilla account blocks sign in attempts if it detects unusual activity. Learn how to unblock your account.
I'm having problems with my Mozilla account
Get answers for common questions about your Mozilla account.
I'm having problems confirming my Mozilla account
Here are some common solutions to help you resolve issues such as missing confirmation emails and outdated or locked Mozilla account status.
Disable Firefox Sync on a lost phone or tablet
This article describes what you should do to prevent someone from accessing your passwords on a lost device with Firefox Sync.