Microsoft addressed issues with dual-boot installations involving Linux that were caused by updates released in August, which disrupted many configurations and Linux boot media. The updates aimed to enhance security by blocking outdated boot managers but resulted in error messages indicating a security policy violation. To resolve these issues, Microsoft created the Secure Boot Advanced Targeting (SBAT) update to prevent installation on dual-boot systems, but the detection mechanism was often ineffective. The SBAT update was paused in September, and Microsoft announced that the problem was resolved with security updates released in May. Affected Windows versions include Windows Server editions from 2012 to 2022, Windows 11 (versions 23H2, 22H2, and 21H2), and Windows 10 (versions 22H2, 21H2, and Enterprise 2015 LTSB). Microsoft also provided guidance for users to prevent the SBAT update and steps to restore dual-boot systems.