It’s possible that templates restored in 4.3.1 from a pre-4.3 backup may continue to target their original Qubes OS release repos (#8701 (https://github.com/QubesOS/qubes-issues/issues/8701)). After restoring such templates in 4.3.1, enter the following additional commands in a dom0 terminal:
sudo qubes-dom0-update -y qubes-dist-upgrade
sudo qubes-dist-upgrade --releasever=4.3 --template-standalone-upgrade -y
This will automatically choose the templates that need to be upgraded. The templates will be shut down during this process.
Fresh templates on a clean 4.3.1 installation are not affected. Users who perform an in-place upgrade from 4.2 to 4.3 (instead of restoring templates from a backup) are also not affected, since the in-place upgrade process already includes the above fix in stage 4. For more information, see issue #8701 (https://github.com/QubesOS/qubes-issues/issues/8701).
View the full list of known bugs affecting Qubes 4.3 (https://github.com/QubesOS/qubes-issues/issues?q=is%3Aissue%20type%3ABug%20label%3Aaffects-4.3%20-label%3A%22R%3A%20cannot%20reproduce%22%20-label%3A%22R%3A%20declined%22%20-label%3A%22R%3A%20duplicate%22%20-label%3A%22R%3A%20not%20applicable%22%20-label%3A%22R%3A%20self-closed%22%20-label%3A%22R%3A%20upstream%20issue%22) in our issue tracker (https://doc.qubes-os.org/en/latest/introduction/issue-tracking.html).
What’s a patch release?
The Qubes OS Project uses the semantic versioning (https://semver.org/) standard. Version numbers are written as [major].[minor].[patch]. Hence, we refer to releases that increment the third number as “patch releases.” A patch release does not designate a separate, new major or minor release of Qubes OS. Rather, it designates its respective major or minor release (in this case, 4.3) inclusive of all updates up to a certain point. See our supported releases (https://doc.qubes-os.org/en/latest/user/downloading-installing-upgrading/supported-releases.html) for a comprehensive list of major and minor releases and our version scheme (https://doc.qubes-os.org/en/latest/developer/releases/version-scheme.html) documentation for more information about how Qubes OS releases are versioned.
August 9, 2026 12
