Microsoft Windows 11 26H1 Update Version OS Build 28000.1764

KB5079489 (OS Build 28000.1764) is a non-security Windows 11 version 26H1 preview update with quality improvements, new features, and servicing stack update KB5085536. Microsoft reports no known issues.

• Built-in Sysmon is now available natively in Windows for threat detection and event capture; it is off by default and must be enabled before use.
• Application Control for Business policy tagging is improved to identify which apps should receive tags more accurately and more reliably.

• Improved sign-in screen reliability and Windows Update settings responsiveness.
• Improved reliability for Nearby Sharing with larger files, Project menu display after Win+P, and waking/resuming from sleep.
• Improved File Explorer reliability, including opening new windows, showing devices on the Network page, and adding Extract all for non-ZIP archive folders.
• Improved printing service performance to reduce slowdowns during high-volume printing.
• Improved taskbar overflow behavior when uncombined and multiple app windows are open.
• Improved Storage Settings dialog design and temporary file scanning performance.
• Improved visual consistency across Windows, including the auto-hide taskbar, Windows Security credential fields, and the print dialog.
• Improved Narrator Natural Voices experience and setup reliability.

• Emoji 16.0 adds a curated set of new emojis in the emoji panel.
• Windows Backup for Organizations adds first sign-in restore for Microsoft Entra hybrid joined devices, Cloud PCs, and multi-user environments.
• Quick Machine Recovery now turns on automatically for eligible non-domain-joined Windows Professional devices and can run a one-time scan.
• A built-in network speed test is available from taskbar network controls and opens in the default browser.
• The Start menu account menu now includes a benefits page option.
• Camera settings now support pan and tilt controls for supported cameras.
• Widgets settings now open as a full-page experience in the Widgets app.
• WebP images can now be used as desktop background.
• Search on taskbar now shows result counts in group headers and supports previewing results.
• RSAT is now supported on Windows 11 Arm64 devices.

• Microsoft is not currently aware of any issues with this update.

• Built-in Sysmon is off by default; enable it in Settings > System > Optional features > More Windows features, or with Dism /Online /Enable-Feature /FeatureName:Sysmon, then complete setup with sysmon -i.
• If Sysmon from Sysinternals is already installed, uninstall it before enabling the built-in version.
• QMR stays off for domain-joined or enterprise-managed devices unless enabled by the organization.
• RSAT on Arm64 is available as optional features through Settings or Control Panel.
• This update includes servicing stack update KB5085536 (OS Build 28000.1763).

Product Information

Vendor: Microsoft

Product: Windows 11

Product type: Software

Application category: Utilities

Platform: Windows

Variant: 26H1

Version: OS Build 28000.1764

Vendor information published: Mar 26, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jun 3, 2026

Description: Client operating system for modern desktop and enterprise environments.