Login and Passwords disappeared
My logins and passwords have all disappeared. Login.json is now login.json-1 and there are 3 more files labeled the same way but have 2,3 and 4 after the login.json. Type of file says corrupt. How can I get my passwords back?
If those others are corrupted you can't use or recover them as backup.
Look here for more help.
Firefox leaves numbered files if it isn't able to replace the current main file (in this case logins.json). You can check those numbered files in a Firefox tab to see if they are valid JSON and how many logins are in the file (Expand All). If you find a suitable file then you can rename the file to logins.json to replace the current file and move the numbered files away.
Make sure to keep a backup copy of all logins.json files and key4.db (encryption key) beforehand.