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Windows 11 gets a December Insider update packed with new features and AI upgrades — reveals Microsoft’s next big push. Here's everything that is new.

In December 2025, Microsoft rolled out at least four preview builds for Windows 11, rolling out a bunch of new features and changes, including Model Context Protocol (MCP), Update Orchestration Platform (UOP), Xbox Full Screen Experience for PCs, Ask Copilot, AI agents for Taskbar, Agent Launchers, and a lot more, and here's all you need to know.

Screenshots of the latest Windows 11 Insider builds for December 2025.

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RAM is getting too expensive to waste memory in Windows 11 — optimize your PC with my tips and keep it running smoothly

On Windows 11, you can reduce RAM usage by limiting startup apps, background services, browser load, and system overhead, and in this guide, I'll show you how.

Windows 11 PC with low memory usage

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Latest Windows 11 Canary build feels less like innovation and more like catch‑up, as features already in testing in the Dev and Beta Channels finally arrive

Microsoft's latest Canary Channel build for Windows 11 Insiders brings forward a number of features that were already in testing in the Dev and Beta Channels.

Windows 11 26H1 as denoted in winver

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Windows 11 lets you shrink taskbar icons for a cleaner, more compact look — here’s how to enable smaller icons easily

On Windows 11, you can make the app icons small in the Taskbar right from the Settings app, and in this guide, I'll show you the easy steps to complete this configuration.

IMages showing off smaller icons for Windows 11 for a how-to article.

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My top 17 Windows 11 features introduced in 2025 — personal picks from cleaner UI experiences to major PC gaming upgrades

As 2025 comes to an end, explore the top Windows 11 features released in 2025, including Start menu changes, Quick Machine Recovery, Xbox FSE, Battery Percentage in Taskbar, Administrator Protection, widgets, and more.

Windows 11 features for 2025

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Microsoft is "raising the bar" and making major changes to how drivers are built and verified on Windows 11 — here are the important details

Windows 11 is raising the security and resiliency bar when it comes to driver signing, and is trying to move peripheral drivers out of the kernel.

Microsoft logo on an iphone with a BSOD in the background

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Microsoft warns that Windows 11’s agentic OS could open the door to new security risks, with Xpia malware showing how AI-driven systems may be exploited by attackers

Microsoft is pushing ahead with its plan to add agentic capabilities to Windows 11, but has issued an important security warning for anyone who is interested in trying it out.

Dell XPS 14 (9440) for 2024

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Windows Secure Boot Certificates to expire in 2026

Windows Secure Boot CertificatesMicrosoft has issued an advisory alerting Windows users and IT admins that older Secure Boot certificates introduced in 2011 will begin to expire in June 2026. These Secure Boot certificates maintain a trust chain that verifies a device’s firmware and boot process. As a result, the expiration of older certificates can lead to issues such […]

The post Windows Secure Boot Certificates to expire in 2026 appeared first on TheWindowsClub News.

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Windows 11’s October Insider update brings 9 features worth trying

In the last two weeks of October 2025, Microsoft released several Insider builds for Windows 11 versions 25H2 and 24H2 with various visual changes and improvements, including a redesigned About page, the Copy & Search feature, proactive memory diagnostics, and more dark mode improvements for File Explorer.

Windows 11 last features in October

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