hi chetandevani, the current firefox sync system doesn't have a recovery key - so it appears you are referring to the "old sync", which was decommissioned in autumn of last year. if you want to use firefox sync, please update to a current version of firefox and create a new firefox account: [[Update Firefox to the latest version]] [[Firefox Sync upgrade - Frequently Asked Questions]] edit: data from the old sync system that is not synced to a local profile will be lost by now.