Windows 10 Version 2004/20H2用のプレビューアップデートKB5001391が公開。タスクバーニュース機能が導入

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Microsoftは本日、Windows 10 Version 2004/20H2用の累積アップデートKB5001391を公開しました(Neowin)。

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るほか、タスクバーでニュースや興味のある情報を確認することができる新機能が追加されています。

更新プログラムはシステムの品質を改善するもので新たな機能は追加されていません。Windows Updateの「更新プログラムのチェック」あるいは、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。

April 28, 2021—KB5001391 (OS Builds 19041.964 and 19042.964) Preview

Version 2004/20H2用の更新プログラムKB5001391では、タスクバーでニュースや天気、スポーツなどの情報を確認することができる機能が追加されたほか、新しいバージョンのWindows10に更新した後、スタートメニューに空白のタイルが表示されることがある問題の修正、Windows Mixed Realityの設定アプリに、ヘッドセットがスリープ状態になるまでのアイドル時間を調整する機能の追加などが行われています。

ハイライト:

  • Introducing news and interests on the Windows 10 taskbar

    With news and interests on the Windows taskbar, you get quick access to an integrated feed of dynamic content, such as news, weather, sports, and more, that updates throughout the day. You can personalize your feed with relevant content tailored for you. In the coming weeks, you will be able to seamlessly peek into your feed directly from the taskbar throughout your day without disrupting your workflow. For more information, see Personalized content at a glance: Introducing news and interests on the Windows 10 taskbar.

  • Updates an issue to prevent blank tiles from appearing on the Start menu after updating to a newer version of Windows 10. 

  • Adds the ability to adjust the amount of idle time before a headset goes to sleep in the Settings app for Windows Mixed Reality. 

改良と修正:

  • Addresses an issue that prevents a site from transitioning out of Microsoft Edge IE Mode when expected. 

  • Addresses an issue that fails to remove mandatory profiles completely when you sign out when using the “Delete cached copies of roaming profiles” Group Policy.

  • Addresses an issue that causes blank tiles to appear on the Start menu with names such as “ms-resource:AppName” or "ms-resource:appDisplayName". These blank tiles represent the installed applications and appear for approximately 15 minutes after updating to a newer version of Windows 10. Installing this update prevents these blank tiles from appearing on the Start menu.

  • Addresses an issue with the Microsoft Japanese Input Method Editor (IME) that prevents an app's custom candidate window from displaying correctly.

  • Addresses an issue that occurs when you install inventory applications.

  • Addresses an issue that includes kernel mode rules for .NET applications in Windows Defender Application Control policies. As a result, the generated policies are significantly larger than necessary.

  • Addresses an issue that causes devices to fail Device Health Attestation.

  • Addresses an issue that turns off S Mode when you enable System Guard Secure Launch on a system running Windows 10 in S Mode.

  • Addresses an issue that causes lsass.exe memory usage to grow until the system becomes unusable. This occurs when Transport Layer Security (TLS) resumes a session.

  • Addresses an issue with a race condition between Task Scheduler and the Workstation Service. As a result, users cannot automatically join a hybrid Azure Active Directory (AAD) domain and error 0x80070490 is generated. 

  • Addresses an issue that causes Azure Active Directory authentication to fail after signing in on Windows Virtual Desktop machines.

  • Addresses an issue that causes AAD Work Accounts to unexpectedly disappear from certain apps such Microsoft Teams or Microsoft Office.

  • Addresses an issue that accidently triggers hybrid AAD joining when the Group Policy “Register domain-joined computers as devices” is set to DISABLED. For more information, see Post configuration tasks for Hybrid Azure AD join

  • Addresses an issue with a partial Service Connection Point (SCP) configuration that causes dsregcmd.exe to stop working. This issue occurs because of a case-sensitive domain ID name comparison that occurs when joining a hybrid Azure Active Directory domain using single sign-on (SSO).

  • Adds the ability to adjust the amount of idle time before a headset goes to sleep in the Settings app for Windows Mixed Reality.

  • Addresses an issue that might generate a stop error when Docker containers run with process isolation.

  • Addresses an issue that causes automatic enrollment and certificate retrieval to fail with the error, “The parameter is incorrect.”

  • Addresses an issue that might cause Microsoft Defender Application Guard virtual machines to stop responding when Microsoft Defender Application Guard for Office opens a document. This issue might occur on some devices or in drivers that utilize GPU Hardware Accelerated Scheduling.

  • Addresses an issue that prevents some media players from playing content on hybrid devices that are running with dGPU on iGPU displays.

  • Addresses an issue with race conditions that cause high CPU usage. As a result, the system stops working and deadlocks occur.

  • Addresses an issue with a deadlock in the New Technology File System (NTFS).

  • Addresses an issue that causes DWM.exe to stop working in some cases.

  • Improves the Windows Server Storage Migration Service by:

    • Adding support for migration from NetApp FAS arrays to Windows Servers and clusters.

    • Resolving multiple issues and improving reliability.

      For more information, see Storage Migration Service overview.

更新プログラムには以下の4件の既知の不具合が存在します。

  • Windows 10 Version 1809以降のWindows 10からそれより新しいバージョンのWindows 10にアップデートするとシステム証明書およびユーザー証明書が失われる可能性がある。
  • ふりがなを自動入力できるアプリで、日本語IMEを使って漢字を入力すると、正しいふりがなが出てこない場合がある。
  • カスタムオフラインメディアまたはカスタムISOイメージからWindowsをインストールしたデバイスでは、この更新プログラムによってMicrosoft Edge Legacyが削除されても、新しいMicrosoft Edgeに自動的に置き換えられない場合がある。
  • 特定の環境でゲームのパフォーマンスが低下する問題が発生(KIPで修正済み)。

回避策はKBページでご確認ください。

Windows Updateの他、Microsoft Update Catalogや、Windows Server Update Services(WSUS)を利用してインストールすることができます。

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