Microsoft mistakenly sent a security update to dual-boot Windows and Linux PCs, causing boot issues

Affected systems show an error message stating, "something has gone seriously wrong

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The update aimed to fix a two-year-old vulnerability in GRUB, a Linux boot loader

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The update was not supposed to target dual-boot systems, but it was mistakenly applied

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Microsoft acknowledged the issue, advising users to work with their Linux vendors for updates

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Several Linux distributions, including Ubuntu, Debian, and Linux Mint, are affected

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Users reported the issue on forums and Reddit, seeking solutions

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Ars Technica suggested deleting the problematic SBAT to work around the issue

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Disabling secure boot temporarily is necessary to apply the workaround

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