Windows 11 Undergoes Series of Updates, Feature Rollouts, and Addresses Critical Issues in Early 2026

Microsoft has rolled out a series of updates for Windows 11 versions 24H2 and 25H2 in early 2026, delivering crucial security patches, innovative feature introductions, and various quality-of-life improvements. These releases have encompassed both mandatory security updates and optional preview builds, with some experiencing user-reported issues and temporary suspensions, highlighting the dynamic nature of Windows development.

Concurrently, Microsoft has provided details regarding the eagerly anticipated Windows 11 version 26H2, slated for release in late 2026.

Windows 11 Version 26H2 Confirmed for Late 2026

Microsoft has officially confirmed that Windows 11 version 26H2 is scheduled for release to the general public in late 2026, with an anticipated rollout around October. This significant update is designed for users currently on Windows 11 25H2 or 24H2, maintaining Microsoft's consistent annual feature update cadence. Notably, version 26H1 is designated exclusively for new Snapdragon X2 and other ARM-based CPUs, serving as a platform-specific update.

Confirmation of 26H2 emerged on January 27, 2026, with the release of Windows 11 Build 26300.7674 to Windows Insiders. This build included explicit references to a "Windows 11 26H2 enablement package," signaling ongoing behind-the-scenes platform changes and testing.

Anticipated features for Windows 11 during 2026 include:

• Copilot in File Explorer: Integration allowing interaction in a side pane, offered as an optional feature.
• Ask Copilot on the Taskbar: A brand new Windows Search experience powered by Copilot, set to replace the standard Windows Search UI, also optional.
• Agenda View in Notifications Center: The reintroduction of the Agenda View, complete with Outlook integration and enhanced Copilot capabilities, implemented via WebView2.
• Modern Run Dialog: An optional, modernized WinUI-based Run dialog featuring the signature Mica effect and new functionalities.
• Other Enhancements: The Xbox Full Screen Experience (FSE) for an optimized gaming environment and system-wide support for .webp images as desktop backgrounds.

January 2026 Patch Tuesday (KB5074109)

The first major update of the year, Windows 11 KB5074109, was released in January 2026 as a mandatory Patch Tuesday update for versions 25H2 and 24H2. This update advanced PCs to Builds 26200.7623 and 26100.7623, respectively, and notably included AI models within its over 4GB size.

Key Fixes and Security Improvements:

• Addressed a substantial 114 security vulnerabilities, significantly bolstering system protection.
• Removed specific modern drivers (agrsm64.sys, agrsm.sys, smserl64.sys, smserial.sys) due to identified security concerns.
• Resolved an issue where Windows Subsystem for Linux (WSL) would not function correctly when a VPN was active.
• Fixed errors impacting Azure Virtual Desktop (AVD) environments during Remote Desktop usage, though users later reported new issues.
• Corrected a bug where Neural Processing Units (NPUs) negatively impacted power performance, leading to improved battery life.
• Improved WinSqlite3.dll with crucial security enhancements.
• Bundled new Secure Boot certificates for eligible enterprise devices, as part of an ongoing refresh to preempt 2011 certificate expirations in June 2026.

Features Rolling Out Gradually:

• Share with Copilot on Taskbar: A new toggle allowing users to easily share an app's screen with Copilot for assistance, manageable within Settings.
• Recommended Section in File Explorer: A new intelligent feed displaying recently accessed, frequently used, and recently downloaded files, compatible with Microsoft and work accounts.
• Advanced Settings Consolidation: Management of features such as Sandbox, virtual workspaces, and Hyper-V has been streamlined and moved to Settings > System > Advanced Settings.
• Consistent File Explorer Dark Mode: Improved dark-themed dialogs for critical actions like deleting large folders or moving files.
• Full-screen Experience for Handhelds: A dedicated gaming experience for handheld devices that minimizes the taskbar and Windows features, prioritizing the Xbox app.
• Improved Performance: Enhanced performance for certain games/applications querying monitors and improved backlight performance for HID-compliant keyboards.
• QR Code Sharing: Extended functionality to include website links and cloud files, and added for Mobile Hotspot.
• Start Menu Account Manager: A new account manager integrated directly into the Start Menu.
• Taskbar Drag-and-Drop: Enabled drag-and-drop functionality for pinning apps to the taskbar.

Reported Issues:

• Users reported a fatal authentication failure (error code 0x8008005) when connecting via Azure Virtual Desktop (AVD).
• Reports indicated a decrease in gaming frame rates, particularly for users with NVIDIA graphics cards.
• An issue was observed where Windows might fail to format USB flash drives using the FAT32 file system.
• A previously identified bug from August 2025, causing the password icon to be hidden on the lock screen, remained unpatched.

February 2026 Security Update (KB5077181)

Microsoft's security update KB5077181, released on February 10, 2026, for Windows 11 versions 24H2 (build 26200.7840) and 25H2 (build 26100.7840), led to widespread reports of critical boot failures for some users.

Key Patches and Features:

• Addressed 58 vulnerabilities across Windows components, including six zero-days actively exploited in the wild.
• Patched severe elevation of privilege flaws, remote code execution risks, and security bypasses.
• Specific CVE IDs included: CVE-2026-21510 (Windows Shell security feature bypass), CVE-2026-21519 (Desktop Window Manager elevation of privilege), CVE-2026-21533 (Windows Remote Desktop Services elevation of privilege), and CVE-2026-20841 (Notepad remote code execution).
• Incorporated new Secure Boot certificates to preempt 2011 certificate expirations in June 2026.
• Included fixes for gaming eligibility checks and WPA3 Wi-Fi connectivity.

Reported Issues:

• Affected devices frequently entered infinite restart loops, preventing access to the desktop.
• Users observed System Event Notification Service (SENS) errors, DHCP failures causing internet loss, and installation errors (0x800f0983, 0x800f0991).
• As of February 15, Microsoft had not listed any known issues on its release page or health dashboard, despite widespread user reports.

Workarounds:

• From a working desktop: Users could uninstall KB5077181 via Control Panel and pause Windows Update.
• If boot loops persisted: The recommended solution was to enter Windows Recovery Environment, select Troubleshoot > Advanced options > Command Prompt, and execute wusa /uninstall /kb:5077181 /quiet /norestart. Running sfc /scannow was also suggested for file repairs.

March 2026 Feature Rollout

Microsoft initiated a significant feature rollout in March 2026, primarily delivered through a cumulative update for Windows 11 versions 25H2 and 24H2. This rollout utilized Controlled Feature Rollout (CFR) technology, meaning features appeared gradually to users. These enhancements were initially previewed to Windows Insiders.

Key Features and Improvements:

• Emoji 16.0: Introduction of new emojis, including fingerprint, harp, shovel, face with bags under eyes, leafless tree, root vegetable, and splatter.
• Windows Backup for Organizations: A first sign-in restore experience, automatically restoring user settings and Microsoft Store apps on Microsoft Entra hybrid joined devices, Cloud PCs, and multi-user environments.
• Quick Machine Recovery (QMR): Automatically enabled for non-domain-joined and non-enterprise-managed Windows Professional devices.
• Taskbar Network Speed Test: A built-in shortcut accessible via Wi-Fi or Cellular Quick Settings, or by right-clicking the network icon in the system tray, opening a speed test in the default browser.
• Start Menu Account Option: A new entry point linking directly to the Microsoft account benefits page.
• Microsoft Entra ID Group and Role SID Resolution: Windows now supports translating Entra cloud group and role security identifiers (SIDs) to readable names for file permissions and access control.
• Camera Pan and Tilt Controls: Settings now include controls for pan and tilt for supported cameras under Settings > Bluetooth & devices > Cameras.
• Built-in Sysmon Functionality: Native inclusion of Sysmon for system event capture, disabled by default and requiring explicit activation.
• Widgets Settings Experience: Widget Settings now open as a full-page experience within the Widgets app.
• WEBP Desktop Background Support: Users can now set .webp image files as their desktop background.
• Taskbar & System Tray: Improved handling of multiple uncombined app windows to prevent all from moving to the overflow area simultaneously.
• Search: Updated the search process icon in Task Manager to a magnifying glass.
• Storage Settings: Modernized design for some dialogs and improved performance of temporary file scanning.
• Windows Update Settings: Enhanced responsiveness of the settings page.
• Login and Lock Screens: Improved login screen reliability.
• Nearby Sharing: Improved reliability for sending larger files.
• Projecting: Improved reliability of displaying the project pane after pressing Windows key + P.
• Printing: Enhanced Windows print service (spoolsv.exe) performance.
• File Explorer: Added an "extract all" option to the command bar when browsing non-ZIP archive folders. Addressed issues with opening new instances and improved network device display reliability.
• Display: Performance improvements to reduce PC resume-from-sleep time.
• Remote Server Administration Tools (RSAT) for ARM64: RSAT support is now available for ARM64 devices.
• Secure Boot Certificates: The gradual rollout of Secure Boot certificate updates continued.

March 2026 Optional Preview Update (KB5079391) and Suspension

An optional preview update, KB5079391, designated "2026-03 Preview Update," was released in March for Windows 11 25H2 (Build 26200.8116) and 24H2 (Build 26100.8116). While it introduced support for 1000 Hz refresh rate monitors and improvements to Smart App Control, its rollout was temporarily suspended due to installation errors.

Key Improvements:

• 1000Hz Refresh Rate Support: Added support for monitors capable of a 1000 Hz refresh rate, requiring compatible hardware and subject to gradual rollout.
• Smart App Control (SAC) Management: Users gained the ability to enable or disable Smart App Control directly within Windows Security settings without reinstalling the operating system. SAC blocks potentially malicious applications.
• Settings App Enhancements: Microsoft 365 plans can now be switched from Settings > Accounts; dialog boxes in Settings > Accounts > Other users were updated; the Settings > About page received improved organization; and the 'Device' card on the Settings home page was extended to more users.
• File Explorer Updates: A fix for an issue that made unlocking previews for internet-downloaded files unreliable; Voice Typing functionality with advanced controls and file renaming; and support for sorting permissions in the "Advanced Security Settings" pop-up.
• Display Support Enhancements: Reduced power consumption for monitors connected via USB4; improved display rotation support upon resuming from sleep; and increased reliability for HDR.
• Other Fixes: Resolution of taskbar instability issues in Safe mode; correction of problems with Voice Access in reading and writing numbers; enhanced handling of Group Policy updates by the Start menu; and improved reliability for Windows Hello.

Suspension of Rollout:

Microsoft temporarily suspended the rollout of KB5079391 due to a known issue causing 0x80073712 installation errors, with messages indicating "Some update files are missing or have problems."

Distribution was limited while the issue was under investigation, with a fix anticipated before the April 2026 Patch Tuesday.