My sign in was “blocked for security reasons” on Firefox Accounts To be on the safer side, click on the Disconnect button to remove the device from the list. Please note it might be a breach of account security, thus judge accordingly. It happens at times that two sessions on the same device are shown as two different devices.

I see duplicates in the Devices & apps list It is possible that Firefox sync is working across the mentioned devices, yet it doesn’t show in the list. The “Devices and apps” list shows the list of devices that are connected to your Firefox Sync account. I do not see my device in the Devices & apps list Fix Firefox Sync problems, issues and errors The data is encrypted so no one else could access it without logging on to the account. Firefox sync helps users access bookmarks, tabs, and passwords with one easy sign-in.

If Firefox Sync is not working for you then here are some suggestions to help you fix Firefox Sync problems, issues and errors on your device.

Firefox for windows 10 tablet