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    Windows 11 KB5074109 Boot Failures and WinRE Recovery Guide

    Microsoft released its January cumulative for Windows 11 (KB5074109) on January 13, 2026 — and within days a series of serious regressions began surfacing, from brief black screens on some Nvidia-equipped machines to full startup failures that print UNMOUNTABLE_BOOT_VOLUME (Stop Code 0xED) and...
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    • Replies: 14
    • Forum: Windows News
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    Windows 11 January 2026 KB5074109: Security fixes and notable regressions

    Microsoft's first cumulative Windows 11 update of 2026 — delivered as KB5074109 on January 13 — has left a broad trail of disruption: critical security fixes were installed, but several high-impact regressions followed, forcing Microsoft into rapid damage control with out‑of‑band patches and...
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    • boot failure boot failures boot issues classic outlook cloud storage emergency update enterprise it january 2026 updates kb5074109 known issue rollback known issues onedrive out of band updates outlook outlook classic outlook problems patch tuesday pst files recovery guidance remote desktop security patches system regressions unmountable boot volume windows 11 windows 11 issues windows 11 updates windows updates winre winre recovery
    • Replies: 15
    • Forum: Windows News
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    KB5074109 Outlook Hang After January 2026 Patch Tuesday

    A routine January Patch Tuesday rollup (KB5074109) accidentally left parts of Microsoft’s classic Outlook experience unstable for a measurable number of users, triggering freezes, lingering OUTLOOK.EXE processes, lost Sent Items and a rapid sequence of follow‑up fixes and mitigations from...
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    • boot failure boot failures cloud file i o emergency updates january 2026 january 2026 updates kb5074109 kb5078127 known issue rollback onedrive onedrive pst out of band updates outlook outlook classic outlook pop outlook pst hangs patch tuesday rollback unmountable boot volume update regression windows 11 windows 11 boot failures windows 11 boot issues windows 11 issues windows 11 update windows 11 updates windows updates winre recovery
    • Replies: 12
    • Forum: Windows News
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