December 10, 2024—KB5048703 (OS Build 10240.20857)
Applies To
Windows 10Release Date:
12/10/2024
Version:
OS Build 10240.20857
12/8/20 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 1507, 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
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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.
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This update makes miscellaneous security improvements to internal OS functionality. No additional issues were documented for this release.
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 December 2024 Security Updates.
Known issues in this update
Microsoft is not currently aware of any issues with this update.
How to get this update
Before you install this update
Microsoft 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 (KB5043936) will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.
Prerequisite
To install any LCU dated September 10, 2024, and later, you must first install SSU KB5043936. If your device or offline image does not have KB5043936, you cannot install any LCUs released on or after September 10, 2024.
Install this update
To install this update, use one of the following Windows and Microsoft release channels.
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None. This update will be downloaded and installed automatically from Windows Update and Microsoft Update. |
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Available |
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None. This update will be downloaded and installed automatically from Windows Update for Business in accordance with configured policies. |
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Available |
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To get the standalone package for this update, go to the Microsoft Update Catalog website. |
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This update will automatically sync with Windows Server Update Services (WSUS) if you configure Products and Classifications as follows: Product: Windows 10 Classification: Security Updates |
File information
For a list of the files that are provided in this update, download the file information for cumulative update 5048703.
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