Microsoft Releases First Extended Security Update for Windows 10 After End of Support
On October 14, 2025, Microsoft officially concluded support for Windows 10 with the release of the final Patch Tuesday update, identified as KB5066791. Today marks a significant milestone as the company introduces its first out-of-band update under the Extended Security Updates (ESU) program.
Overview of the Latest Update
This out-of-band (OOB) update is specifically designed for consumer devices not enrolled in the ESU program for Windows 10. It is cumulative in nature, integrating crucial security enhancements and fixes rolled out in the previous security update from October 14, 2025, specifically KB5066791, along with additional improvements.
Key Features of the Update
The following highlights the main improvements included in this release:
- This update resolves a bug in the Windows 10 Consumer ESU enrollment process. Users may have encountered issues where the enrollment wizard failed to function correctly. With this update, consumer devices will have a smooth experience enrolling in the ESU program using the provided enrollment wizard.
Important Notes for Users
Microsoft has emphasized the significance of this update:
- Upon successful enrollment, devices will begin receiving Extended Security Updates through Windows Update, ensuring continued protection against emerging security threats.
- Even though this update is classified as a security update for non-enrolled Windows 10 consumer devices, it plays a critical role in addressing the enrollment issue that hindered users from accessing essential security updates.
Learn More
For additional details, users can access the support article here on Microsoft’s official website.
For further insights, you can refer to the coverage provided by Neowin.
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