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Windows 11 Update Failures

User-facing symptoms after the January 2026 security update, including stop-code UNMOUNTABLE_BOOT_VOLUME boot failures and other functional regressions.

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Feb 7, 2026

Which specific Windows 11 OEMs, chipsets, or CPUs were identified as affected by the December 2025/January 2026 update chain?

The December 2025–January 2026 chain produced reports of boot failures and other regressions but none of the provided reporting or documentation identifies specific OEMs, motherboard chipsets, or CPU ...