A Windows security update bug has prevented some Windows 11 24H2 and 25H2 users from booting into their PCs, requiring them ...

January patch trips up Azure Virtual Desktop and Windows 365 authentication Microsoft has kicked off 2026 with another faulty ...

米Microsoftは1月17日（現地時間）、2026年1月のセキュリティ更新プログラムで発生したトラブルを解決するためのパッチを定例外（OOB）で公開した。「Microsoft Update カタログ」を介して提供中だ。

Windows 11 January 2026 updates may cause boot failures on some PCs. Microsoft is investigating issues linked to KB5074109.

The first big Windows update of 2026 is a glitchy mess - here's the full list of bugs and fixes ...

Windows 11 KB5078127 is an 'out-of-band' patch to fix an issue that broke Outlook Classic (POP, PST) after January 2026 Patch ...

After Windows 11 January 2026 update, we're seeing reports of other issues, including a sleep problem (S3), and more.

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

Microsoft has acknowledged further problems with the January security updates for Windows. Applications may no longer respond ...

The emergency patch addresses problems linked to Outlook and files stored in cloud-based locations following Microsoft’s ...

Microsoft has issued guidance to uninstall KB5074109 security update or switch to webmail after the patch caused Outlook ...

Microsoft's January security updates for Windows 11 also appear to be disrupting Outlook. Microsoft is investigating problems ...