Windows 10 KB5040525 fixes WDAC issues causing app failures, memory leak

Windows 10 KB5040525 fixes WDAC issues causing app failures, memory leak

July 23, 2024 at 05:52PM

Microsoft released the July 2024 preview update for Windows 10, version 22H2 (KB5040525), offering fixes for issues such as Windows Defender Application Control causing app crashes and system memory exhaustion. This optional cumulative update aims to enhance the user experience by allowing administrators to test changes before the mandatory Patch Tuesday release. Additionally, it provides various fixes and improvements.

From the meeting notes, I have extracted the following key takeaways regarding the Windows 10 update (KB5040525):

1. This is a monthly optional cumulative update designed to allow Windows administrators to test fixes and improvements that will be included in the August 2024 Patch Tuesday release.

2. KB5040525 includes fixes for issues related to Windows Defender Application Control (WDAC) causing app crashes and system memory exhaustion.

3. It addresses a WDAC memory leak that may exhaust system memory over time when provisioning a device and resolves a bug triggering app failures when applying WDAC Application ID policies.

4. Additionally, it fixes issues with Windows Backup failure for devices with an Extensible Firmware Interface (EFI) system partition (ESP).

5. The update includes additional fixes and improvements and will update Windows 10 22H2 to build 19045.4717.

6. Other highlighted fixes and new features in this update include addressing issues with the Print Support App and Universal Print clients, as well as adding to the Windows Kernel Vulnerable Driver Blocklist file (DriverSiPolicy.p7b).

7. Users can install this update via the Windows Update settings or manually download and install it from the Microsoft Update Catalog.

8. Those using Windows 10 versions 2004, 20H2, 21H1, or 21H2 can upgrade to Windows 10 22H2 using an enablement package.

The complete list of changes included in this update is available in the KB5040525 support bulletin published by Microsoft on Tuesday.

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