Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.
Microsoftは2026年1月13日に2026年初の月例アップデートとなるKB5074109を配信しましたが、配信当初からアプリのフリーズやシャットダウン関連の不具合が発生していました。しかし最近になり、一部のPCで突然起動不可能になる不具合が発 ...
Microsoft is investigating reports that some Windows 11 devices are failing to boot with "UNMOUNTABLE_BOOT_VOLUME" errors ...
Microsoft is aware of an alleged issue that leaves PCs unable to boot and requires manual recovery after Windows 11 January ...
Microsoft released unplanned updates over the weekend. They correct errors in the January patches and bring new boot certificates.
In a surprising turn of events, Microsoft has confirmed that its January 2026 security update, KB5074109, is causing significant boot issues for some Windows 11 users. This latest development ...
Windows 11 KB5074109 is wreaking havoc thanks to several issues, with the most serious keeping users out of the operating ...
2026年1月13日に配信されたセキュリティ更新プログラム「Windows 11 KB5074109」で、シャットダウンまたはスリープを試みると再起動しかできなくなる問題が発生しました。Windowsは1月17日に緊急修正パッチを配信しています。
The most recent January Windows Update is broken on a number of PCs, but at least virtual machines don't seem to be impacted.
Windows 11 had a rough 2025. We tracked the top 20 Windows 11 issues reported by Windows Latest, from failed updates to ...
Microsoft is investigating reports of serious boot failures affecting Windows 11 devices following the January 2026 security ...
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