Encryption: set up a security key

Messages encrypts private rooms and direct messages as default. You need a security key to access your encrypted messages on multiple devices or after signing out.

1. Click your profile picture in the top left.
2. Select Security & Privacy.
3. Click Set up Secure Backup under Encryption.
4. Choose Generate a Recovery Key and download or copy the key.
5. Store the key somewhere outside this device, for example in a password manager.

You will need the key the next time you sign in on a new device or browser.