Tails could not determine whether an upgrade is available from our website. This is most likely caused by a network connection problem.

To solve it:

  1. 檢查網路連線,然後重啟 Tails 以試著再作升級更新。

  2. Read our release notes to see if there are known issues with automatically upgrading to the latest version of Tails.

  3. If the problem persists, do a manual upgrade.