I suddenly lost all passwords in firefox desktop. I have synced firefox on Android. All passwords remain on firefox android.
How to transfer all passwords from Android to Desktop?
Use Password Exporter. Export from Android and import into Desktop.
This add-on allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Note: This add-on won't work in Firefox 57. It may eventually if the APIs to access passwords are implemented.
Source Password Exporter
Android download: https://addons.mozilla.org/en-US/android/addon/password-exporter/versions/?page=1#version-1.3.4
Desktop download: https://addons.mozilla.org/en-US/firefox/addon/password-exporter/
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