Microsoftは7月22日(現地時間)、Windows 11 Version 23H2/22H2用のプレビューアップデートKB5062663を公開しました。オプション扱いの更新プログラム(プレビュー版)で、多数の不具合が修正されています。Windows Updateの「更新プログラムのチェック」を利用するか、Microsoft Update Catalogからファイルをダウンロードすることで、手動でインストールすることができます。July 22, 2025—KB5062663 (OS Builds 22621.5699 and 22631.5699) PreviewWindows 11 Version 23H2/22H2用の更新プログラムKB5062663では、Resilient File System（ReFS）使用時に、大きなファイルに対し、バックアップアプリケーションがメモリを使い果たすことがある問題が修正されています。また、共有フォルダー内のPDFファイルを検索する際、「No More Files」や「STATUS_NO_MORE_FILES」などの誤ったエラーメッセージが表示される問題も修正されています。リリースノートは以下の通りです。ハイライトThis update addresses non-security issues for your Windows operating system. 改良と修正[Country and Operator Settings Asset (COSA)] Fixed: This update brings profiles up to date for certain mobile operators.[File systems]Fixed: This update addresses an issue in the Resilient File System (ReFS) where using backup applications on large files could occasionally result in system memory becoming fully exhausted.Fixed: An issue where searching for PDF files in a shared folder could return incorrect error messages—such as “No More Files” or “STATUS_NO_MORE_FILES.” These errors disrupted output to the virtual PDF printer and interfered with backup processes.[Input (known issue)] Fixed: An issue when using the Microsoft Changjie IME (input method editor) for Traditional Chinese might cause problems such as not being able to form or select words, unresponsive spacebar or blank key, incorrect word output, or a broken candidate window display. This can occur after installing KB5062552.Fixed: This update addresses an issue that affects Phonetic input methods, including the Hindi Phonetic Input keyboard and the Marathi Phonetic keyboard, which might not work correctly after installing KB5062552.[Networking] Fixed: An issue where peripheral devices could take longer to work after resuming from hibernation on some devices with active cellular connections.[Printer] Improved: Printer names now appear more clearly when using IPP Directed Discovery, making it easier to identify printers during setup.[Stability issue] Fixed: This update addresses an issue observed in rare cases after installing the May 2025 security update and subsequent updates causing devices to experience stability issues. Some devices became unresponsive and stopped responding in specific scenarios.[Taskbar] Fixed: This update addresses an issue where the taskbar icons for accessibility features are not appearing.既知の不具合更新プログラムには既知の不具合は存在しません。更新プログラムはWindows Updateの他、Microsoft Update Catalogを利用してインストールすることができます。