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lost all password !!

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hi i was sync all password in my account but suddenly deleted all of them how to recover my logins password thanks

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i use more than 3 years but i not found any password form 2 days ago

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password available on my mobile but deleted from my desktop

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Fixing the lost password issue

 #   Open the Firefox web browser.
  1. Load about:support.
  2. Click on the "open folder" link near the top of the page that opens; this opens the profile folder.
  3. Close Firefox.
  4. Check if you see a file called logins.json.corrupt.
  5. If you do, rename the file to logins.json to fix it.
  6. Start Firefox. The passwords should be available again.

https://www.ghacks.net/2019/06/14/if-you-lost-all-passwords-in-firefox-read-this/