Restore end-to-end encrypted chats with a 40-character code on Messenger

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This feature is gradually being introduced and may not be available to you yet.

Restore chats with a 40-character code

When you log in to Messenger on a new device, you may be asked to enter your 40-character code to restore your chats. This is the same 40-character code that would’ve been generated when you first created a backup on Messenger and chose to generate a 40-character code.
If you generated a 40-character code for your end-to-end encrypted chats but you can’t remember it, you may be able to restore your chats with a one-time code. You can also generate a new 40-character code.

Generate a new 40-character code

  1. Open the Messenger mobile app.
  2. Tap Menu, then tap Settings.
  3. Tap Privacy & safety.
  4. Tap End-to-end encrypted chats.
  5. Tap Message storage.
  6. Tap More options below How you restore your chat history.
  7. Tap Generate 40-character code.

Delete your 40-character code

You can only delete your 40-character code from messenger.com on a computer at this time.
When you delete your 40-character code, you won’t be able to reuse that 40-character code to access your end-to-end encrypted chats again in the future. Note that you can only delete a security method if you have alternative security methods set up.
  1. Go to messenger.com.
  2. Click your profile picture, then click Privacy & safety.
  3. Click End-to-end encrypted chats, then click Message storage.
  4. Click Manage security methods.
  5. Click 40-character code and follow the on-screen prompts to delete your security method.
If you don’t recall generating a 40-character code, or you’re being asked to enter a PIN to restore your chat history, see other options to restore your end-to-end encrypted chats on Messenger.

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