Tails 6.4

New features

Random seed

Tails now stores a random seed on the USB stick to strengthen all cryptography.

Having a secure random number generator is critical to some of the cryptography used in Tails, for example, in the Persistent Storage, Tor, or HTTPS.

This random seed is stored outside of the Persistent Storage so that all users can benefit from stronger cryptography.

Changes and updates

  • Switch to using HTTPS addresses instead of an onion addresses for the Debian and Tails APT repositories. This makes the Additional Software feature more reliable.

  • Update Tor Browser to 13.0.16.

  • Update the Tor client to

  • Update Thunderbird to 115.12.0.

Fixed problems

  • Fix more issues when unlocking the Persistent Storage. (#20020, #20344, #19913)

  • Fix connecting to a mobile broadband network on some hardware. (#20291)

  • Enable again the PDF reader of Thunderbird that we disabled in Tails 6.3 for security.

  • Improve the error message of Tails Cloner when the target USB stick cannot be unmounted because it is being used. (#19253)

  • Fix the homepage of Tor Browser when using the New Identity feature. This removes the error message Tor Browser blocked your homepage from loading. (#20381)

  • Remove the redundant dialog when unlocking a VeraCrypt volume using the Unlock VeraCrypt Volumes utility. (#20281)

For more details, read our changelog.

Get Tails 6.4

To upgrade your Tails USB stick and keep your Persistent Storage

  • Automatic upgrades are available from Tails 6.0 or later to 6.4.

    You can reduce the size of the download of future automatic upgrades by doing a manual upgrade to the latest version.

  • If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a manual upgrade.

To install Tails 6.4 on a new USB stick

Follow our installation instructions:

The Persistent Storage on the USB stick will be lost if you install instead of upgrading.

To download only

If you don't need installation or upgrade instructions, you can download Tails 6.4 directly: