Download Windows 11 KB5066835 25H2 with New Features

Microsoft has begun the rollout of the Windows 11 update KB5066835, which is part of the October 2025 Patch for both versions 25H2 and 24H2. This significant update introduces several features, including an AI Actions shortcut in File Explorer, enhanced functionality for Notification Center on secondary monitors, and the ability to relocate volume and brightness indicators, among other improvements. Users can receive this update via Windows Update, or they can access offline installer links (.msu) provided by Microsoft.

As a crucial security update linked to Microsoft’s October Patch Tuesday, KB5066835 is being deployed across systems running Windows 11 version 25H2 and 24H2. It is important to note that Windows 11 version 25H2 shares its platform release with the 24H2 version, meaning that updates for both will occur simultaneously.

2025-10 Cumulative Update for Windows 11 Version 25H2 for x64-based Systems (KB5066835) (26200.6899)

Upon checking for updates at 10 AM PT, I noticed the update appeared as “2025-10 Cumulative Update for Windows 11 Version 25H2 for x64-based Systems (KB5066835) (26200.6899).” For those using version 24H2, the corresponding build number is 26100.6899.

Accessing Windows 11 KB5066835 Download Links

For users interested in obtaining the update, here are the Direct Download Links for Windows 11 KB5066835: 64-bit and ARM-64. Use the Update Catalog by selecting “Download” and clicking on the resulting.msu link (which appears in a pop-up) to obtain the package. Occasionally, the Update Catalog might display in an incorrect language, but this can be safely overlooked.

After downloading the offline installer for the October 2025 Update, simply double-click the.msu file in File Explorer. The alternative method using the Update Catalog should only be attempted in scenarios where

Windows Update does not function
Installation of KB5066835 encounters errors

Build Number	Size	OS Version	Architecture
26100.6899	3932.4 MB	Windows 11 Version 24H2	x64-based
26100.6899	3726.2 MB	Windows 11 Version 24H2	arm64-based
26200.6899	3932.4 MB	Windows 11 Version 25H2	x64-based
26200.6899	3726.2 MB	Windows 11 Version 25H2	arm64-based

The October 2025 Update represents a significant feature drop, which may lead to a longer than usual downloading and installation process. We measured an average total time of approximately 7 minutes for both download and installation, with an additional 2 minutes required for rebooting.

If utilizing the Microsoft Update Catalog, be prepared for substantial file sizes as outlined above; however, downloading through Windows Update typically results in a package less than 2GB.

New Features in Windows 11 Build 26200.6899 (25H2) and 21200.6899 (24H2)

This October 2025 Update presents an array of new features, including a command-line text editor dubbed “Edit.” However, Microsoft has indicated to Windows Latest that many of these enhancements will be rolled out gradually, meaning some users may not see them immediately after updating to versions 26200.6899 (25H2) and 21200.6899 (24H2).

1. Introducing the New Edit Tool

Among the changes post-installation of Windows 11 KB5066835, users will find a newly included command-line text editor named “Text.” This serves as a lightweight alternative to Notepad for users who favor command-line interaction over graphical interfaces.

Edit is an open-source text editor that builds on classic tools provided in MS-DOS. To access it, simply search for “Edit” within Windows Search. The tool operates within Windows Terminal and offers a user-friendly experience for simple editing tasks. While it may not rival Notepad++ in features, it supports essentials like word wrap and searching.

2. Enhanced Notification Center Functionality

Recently, Windows 11 upgraded its notification center to include a full clock, allowing users to view time with seconds. Previously, when using multiple monitors, users faced limitations with Notification Center appearing only on the primary display. The new KB5066835 update rectifies this, allowing the notification center to be accessed on secondary monitors.

3. Customizable On-Screen Indicators

With this update, users now have the option to relocate the indicators that appear when adjusting volume or brightness settings. Previously fixed at the screen’s bottom center, these indicators can be modified based on user preference.

To customize the position of these indicators, simply navigate to Settings > System > Notifications. In that section, scroll to the options under position of on-screen indicators. By default, settings will be positioned at the bottom center; however, users can opt for either the top left or top center positions.

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