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[[!meta title="Tails 4.21 is out"]]
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[[!meta date="Tue, 10 Aug 2021 12:34:56 +0000"]]
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[[!tag announce]]
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<h1 id="changes">Changes and updates</h1>
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- Update *Tor Browser* to [10.5.4](https://blog.torproject.org/new-release-tor-browser-1054).
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- Update *Thunderbird* to [78.12](https://www.thunderbird.net/en-US/thunderbird/78.12.0/releasenotes/)
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<h1 id="fixes">Fixed problems</h1>
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Prevent *Tails Installer* from deleting a Persistent Storage when doing a manual upgrade and choosing **Cancel** in the confirmation dialog. ([[!tails_ticket 18494]])
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For more details, read our [[!tails_gitweb debian/changelog desc="changelog"]].
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<h1 id="issues">Known issues</h1>
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None specific to this release.
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See the list of [[long-standing issues|support/known_issues]].
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<h1 id="get">Get Tails 4.21</h1>
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To upgrade your Tails USB stick and keep your persistent storage
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- Automatic upgrades are available from Tails 4.19 or later to 4.21.
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If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a [[manual upgrade|doc/upgrade/#manual]].
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To install Tails on a new USB stick
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Follow our installation instructions:
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[[Install from Windows|install/windows]]
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[[Install from macOS|install/mac]]
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