Windows 10 Version 22H2のプレビューアップデートKB5055612が公開 - WSL2のGPUバグが修正

2025年4月23日

［PR］記事内のアフィリエイトリンクから収入を得る場合があります

URLをコピーしました！

Microsoftは4月22日(現地時間)、Windows 10 Version 22H2用のプレビューアップデートKB5055612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。

April 22, 2025—KB5055612 (OS Build 19045.5796) Preview

April 22, 2025—KB5055612 (OS Build 19045.5796) Preview

Windows 10 Version 22H2用の更新プログラムKB5055612では、GPUパラバーチャライゼーションのチェックが、Windows Subsystem for Linux 2(WSL2)において大文字と小文字を区別していた問題が修正されています。

GPUパラバーチャライゼーションのチェックは、仮想化環境でGPUを効率的に利用するための機能を確認するプロセスです。

Windowsカーネルの脆弱なドライバのブロックリスト(DriverSiPolicy.p7b)の更新や、SgrmBroker.exeに関連されるエラーがイベントビューアーに表示される問題の修正も行われています。

リリースノートは以下の通りです。

ハイライト

[Internal Windows OS] This update contains miscellaneous security improvements to internal Windows OS functionality.

改良と修正

[Graphics] Fix: The check for GPU paravirtualization was case-sensitive in Windows Subsystem for Linux 2 (WSL2). This issue might potentially cause GPU paravirtualization support to fail.

[OS Security] Updates to the Windows Kernel Vulnerable Driver Blocklist (DriverSiPolicy.p7b). Additions have been made to blocklist drivers with security vulnerabilities that have been used in Bring Your Own Vulnerable Driver (BYOVD) attacks.

[System Guard Runtime Monitor Broker service (Known issue)] Fixed: The Windows Event Viewer might display an error related to SgrmBroker.exe, on devices that have installed Windows updates released January 14, 2025, or later. This error can be found under Windows Logs > System as Event 7023, with text similar to ‘The System Guard Runtime Monitor Broker service terminated with the following error: %%3489660935’.

既知の不具合

更新プログラムには以下の1件の既知の不具合が存在します。

Citrix

Symptoms

Devices that have certain Citrix components installed might be unable to complete installation of the January 2025 Windows security update. This issue was observed on devices with Citrix Session Recording Agent (SRA) version 2411. The 2411 version of this application was released in December 2024.

Affected devices might initially download and apply the January 2025 Windows security update correctly, such as via the Windows Update page in Settings. However, when restarting the device to complete the update installation, an error message with text similar to “Something didn’t go as planned. No need to worry – undoing changes” appears. The device will then revert to the Windows updates previously present on the device.

This issue likely affects a limited number of organizations as version 2411 of the SRA application is a new version. Home users are not expected to be affected by this issue.

Workaround

Citrix has documented this issue, including a workaround, which can be performed prior to installing the January 2025 Windows security update. For details, see Citrix’s documentation.

Microsoft is working with Citrix to address this issue and will update this documentation once a resolution is available.