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Why is this happening?
 
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After this change in Tails occurs, the computer might display a **Secure Boot Violation** error or another error message when trying to start Tails.
 
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Otherwise, Tails will no longer start on this computer after a future Tails upgrade. We cannot predict when such an upgrade will occur, because the timing depends on changes that Tails could inherit from Debian in any Tails upgrade.
 
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[[!img support/known_issues/secure_boot_certificates/secure_boot_update_needed.png class="screenshot" alt="Notification: Secure Boot Update Needed"]]
 
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If the **Secure Boot Update Needed** notification below appears when starting Tails, it means that the Secure Boot certificates of this computer need to be updated.
 
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[[!toc startlevel=2]]
 
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[[!meta title="Secure Boot certificates update"]]
 
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File “wiki/src/support/known_issues/secure_boot_certificates.ca.po” was added. 4 days ago
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In the BIOS menu, find the **Secure Boot** setting and disable it. This option is usually in either the **Security** tab, the **Boot** tab, or the **Authentication** tab.
 
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You can usually disable Secure Boot through the BIOS settings of the computer, but the procedure varies by manufacturer. To learn how to edit the BIOS settings, search for the user manual of the computer on the support website of the manufacturer.
 
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Instead of updating the certificate, you can also disable Secure Boot. Even with Secure Boot disabled, the regular operating system should still start.
 
4 days ago
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If the **Secure Boot Update Needed** notification persists when restarting Tails, it means that the Secure Boot certificates of the computer are still outdated.
 
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Disabling Secure Boot
 
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Linux distributions that use the GNOME desktop automatically apply this
update through GNOME Software.
 
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For Linux, such updates are applied by the [[!wikipedia fwupd]] daemon.
 
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See also [[Microsoft: Install Windows
updates|https://support.microsoft.com/en-us/windows/install-windows-updates-3c5ae7fc-9fb6-9af1-1984-b5e0412c556a]].
 
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For Windows, select **Start ▸ Settings ▸ Windows Update ▸ Check for Windows updates**.
 
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To update the Secure Boot certificates of the computer, restart its regular operating system, Windows or Linux, and apply all available updates.
 
4 days ago
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Updating the Secure Boot certificates
 
4 days ago
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Tails has detected that the computer still has outdated Secure Boot certificates and needs an update.
 
4 days ago

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