We are currently not aware of any issues with this update. This package includes monthly updates and fixes to the Microsoft Defender antimalware platform and engine that is used by Microsoft Defender Antivirus in Windows 11. This package should be applied offline on Windows Images/VHD (x) file.

To view the latest updates about this release, visit the Windows release health dashboard or the update history page for Windows 11, version 25H2 and 24H2. This section provides key notifications related to this release, including announcements, change logs, and end-of-support notices.

Microsoft Support - Microsoft DefenderUpdate for Microsoft Defender antimalware platform (KB4052623) - Microsoft Support. Schedule a scan in Microsoft Defender Antivirus - Microsoft Support. Mitigation of a large number of block events that collect in the MDATP portal - Microsoft Support.

Resolves a vulnerability in Windows that could allow remote code execution if an attacker sends specially crafted messages to a Microsoft Server Message Block 1.0 (SMBv1) server.

Discusses how to update the Microsoft Malware Protection Engine, including prerequisites, restart, and removal, and how to verify that the updates were installed correctly. Microsoft Malware Protection Engine deployment information - Microsoft Support.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

To get the standalone package for this update, go to the Microsoft Update Catalog website. A list of the files that are included in this update are provided in a CSV (Comma delimited) (*.csv) file. The file can be opened in a text editor such as Notepad or in Microsoft Excel.

On the left side of this page, you can find a list of all the cumulative updates for .NET Framework that were released for this version of Windows. You can also find more information about releases and any known issues.

Windows Update is an essential component of Windows 11, ensuring your system remains secure, stable, and up-to-date with the latest features. However, issues can occasionally arise, preventing updates from installing. This guide provides detailed steps to troubleshoot and resolve Windows Update problems effectively.

Windows Server 2025 is the latest release in our Long Term Servicing Channel. On the left side of this page, you’ll find a list of all the updates released for this version of Windows Server. You can also find more information about releases and any known issues.