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。

Microsoft has confirmed that the Windows 11 January 2026 Update is causing at least three major issues, rolling out fixes for ...

The fix is for a bug that prevents some systems from shutting down, while another bug that prevents hibernation has no ...

Windows 11 KB5074109 causes a black screen on some PCs, including those with an Nvidia GPU, and also freezes Outlook if you ...

A Windows 11 security update caused shutdown and remote access failures, forcing Microsoft to release an emergency fix within ...

Microsoft’s first Windows 11 security update of 2026 broke shutdowns and some Remote Desktop sign-ins. Microsoft has released ...

According to Microsoft, the initial update affected Windows 11 version 23H2 and meant some computers were failing to shut ...

Windows 11 faced shutdown and remote access faults after the January 2026 security update, prompting a rare out-of-band fix ...

In a surprising turn of events, Microsoft’s first security update for Windows 11 in 2026 has left some users grappling with shutdown and hibernation issues. Released on January 13, this update was ...

The start of 2026 has proven bumpy for Microsoft and its Windows user base. What was expected to be a routine January ...

Microsoft's January 2026 update for Windows 11 has led to a shutdown bug affecting a minor group of users, causing systems to ...

Microsoft has released emergency updates for Windows 11 and Windows 10 to fix serious problems caused by the January 2026 ...