July 9, 2024—KB5040434 (OS Build 14393.7159)

11/19/20
For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. For an overview of Windows 10, version 1607, see its update history page.

**Important:**Windows updates do not install Microsoft Store application updates. If you are an enterprise user, see Microsoft Store apps - Configuration Manager. If you are a consumer user, see Get updates for apps and games in Microsoft Store.

Highlights

• This update addresses security issues for your Windows operating system.

Improvements

This security update includes quality improvements. Below is a summary of the key issues that this update addresses when you install this KB. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.

• ​​​​​​​**[Republic of Turkey name]**The new, official name is the Republic of Türkiye.
• [Remote Authentication Dial-In User Service (RADIUS) protocol] This issue is related to MD5 collisions. For more information, see KB5040268.
• **[BitLocker]**This update adds PCR 4 to PCR 7 and 11 for the default Secure Boot validation profile. See CVE-2024-38058 for more information.
  If you installed earlier updates, only the new updates contained in this package will be downloaded and installed on your device. For more information about security vulnerabilities, please refer to the new Security Update Guide website and the July 2024 Security Updates.

Known issues in this update

How to get this update

Before you install this updateMicrosoft strongly recommends you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing the LCU and applying Microsoft security updates. For general information about SSUs, see Servicing stack updates and Servicing Stack Updates (SSU): Frequently Asked Questions. If you are using Windows Update, the latest SSU (KB5040562) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.Install this updateTo install this update, use one of the following Windows and Microsoft release channels.

Windows UpdateBusinessCatalogServer Update Services

File informationFor a list of the files that are provided in this update, download the file information for cumulative update 504043.