KB5077241


Microsoft released preview update KB5077241 (26200.7922) for Windows 11 version 25H2 (2025 update). The cumulative update package KB5065426 (build 26100.7922) is intended for Windows 11 version 25H2 (Windows 11 2025 Update) based on x64 (amd64) and ARM64 processors.

Installation via Windows Update: go to Settings > Windows Update and click Check for updates. A computer restart is required to complete the installation. After installing the update, the Windows 11 build number will change to 26200.7918.

Note: to have preview updates installed automatically, enable the Get the latest updates as soon as they are available option in Settings > Windows Update.

Feature / Change Performance Increase or Decrease Optimization PC Speed Impact Gaming Optimization
Emoji 16.0 support (new emoji set) ⚪ No change 🟡 Minor (emoji panel rendering optimized) ⚪ No impact ⚪ No impact
First-run restore for organizations (Backup and restore) 🟢 Slight increase after initial setup (apps pre-restored) 🟢 High (reduces manual setup time) 🟡 Slight improvement on first login ⚪ No impact
Quick Machine Recovery (QMR) auto-enable on Windows Pro 🟢 Improves system recovery speed 🟢 High (automatic remediation) 🟡 Slight improvement during recovery scenarios ⚪ No impact
Built-in network speed test (Taskbar/System tray) ⚪ No change 🟡 Medium (quick diagnostics) ⚪ No impact 🟡 Low (helps verify connection for online gaming)
Taskbar overflow behavior fix (app combining disabled) ⚪ No change 🟡 Medium (better window management) ⚪ No impact ⚪ No impact
Microsoft account benefits page in Start menu ⚪ No change 🟡 Low (faster access to account info) ⚪ No impact ⚪ No impact
SID resolution for Microsoft Entra ID groups and roles ⚪ No change 🟡 Medium (correct permission display) ⚪ No impact ⚪ No impact
Pan and tilt controls for cameras (Settings) ⚪ No change 🟡 Low (faster hardware adjustment) ⚪ No impact ⚪ No impact
Built-in Sysmon (optional feature) 🔴 Slight decrease if enabled (event logging overhead) 🟢 High (advanced threat detection) 🔴 Slight decrease when active 🔴 Slight decrease when active (background logging)
Widget settings on separate page ⚪ No change 🟡 Low (clearer settings UI) ⚪ No impact ⚪ No impact
.webp desktop background support ⚪ No change 🟡 Low (more format flexibility) ⚪ No impact ⚪ No impact
Search process icon update in Task Manager ⚪ No change ⚪ No impact ⚪ No impact ⚪ No impact
Storage settings dialog redesign, temp file scan performance 🟢 Slight increase (faster temp file scanning) 🟢 Medium (improved storage cleanup speed) 🟡 Slight improvement during disk cleanup ⚪ No impact
Windows Update settings page responsiveness 🟢 Slight increase (UI responsiveness) 🟡 Low (faster navigation) 🟡 Slight improvement in update management ⚪ No impact
Login and lock screen reliability 🟢 Slight increase (fewer hangs) 🟡 Medium (faster login) 🟡 Slight improvement in boot/login time ⚪ No impact
Nearby sharing large file transfer reliability 🟢 Slight increase (fewer failures) 🟡 Medium (more stable transfers) ⚪ No impact ⚪ No impact
Projection panel (Win + P) stability 🟢 Slight increase (less flickering/crashes) 🟡 Low (smoother switching) ⚪ No impact 🟡 Low (stable multi-monitor for gaming setups)
Print spooler service performance (large jobs) 🟢 Slight increase (under heavy load) 🟢 Medium (improved queue handling) 🟡 Slight improvement when printing large documents ⚪ No impact
File Explorer: Extract All for non-ZIP, Explorer instance fix, Network device display 🟢 Slight increase (less redundant processes) 🟡 Medium (better file management) 🟡 Slight improvement in file operations ⚪ No impact
Display performance: exit sleep optimization, docking station lid closed reliability 🟢 Slight increase (faster wake) 🟢 Medium (reduced resume time on busy systems) 🟢 Slight improvement in wake from sleep 🟡 Low (quicker return to gaming after sleep)
Minor visual fixes (taskbar auto-hide, security popups, print dialog) ⚪ No change 🟡 Low (cosmetic and usability fixes) ⚪ No impact ⚪ No impact

Find and Change Settings

Setting Where to find How to change
Emoji 16.0 support Emoji panel (Win + .) Open the emoji panel by pressing Win + . (period). The new set of emojis from Emoji 16.0 is automatically available. No additional setting is required to enable the new emojis.
First-run restore (Data Archiving Program) Microsoft Entra hybrid joined devices, cloud PCs, multi-user environments This feature is automatic for organizations using the Data Archiving Program. On Microsoft Entra hybrid joined devices, cloud PCs, and multi-user environments, user settings and Microsoft Store apps are restored automatically upon first login. No manual user action is required.
Quick Machine Recovery (QMR) Windows Pro devices On Windows Pro devices that are not domain-joined or managed by enterprise solutions, QMR is enabled automatically. For domain-joined and enterprise devices, it remains disabled unless the organization manually activates it through enterprise management policies.
Built-in network speed test Wi-Fi/cellular quick settings or network icon context menu Click the network icon in the system tray, then select the network speed test option from the quick settings or context menu. The test opens in your default browser and checks Ethernet, Wi-Fi, and mobile connections.
Taskbar app button combining Settings > Personalization > Taskbar > Taskbar behaviors To disable app button combining, open Settings > Personalization > Taskbar > Taskbar behaviors and set "Combine taskbar buttons and hide labels" to "Never". When combining is disabled, only the specific window that lacks space moves to the overflow area, not the entire app.
Microsoft account benefits page Start menu > Profile menu Open the Start menu, click your profile picture or name, and select the new item that navigates to the Microsoft account benefits page.
SID resolution for Microsoft Entra ID groups and roles File permissions and local groups This feature works automatically for Microsoft Entra ID groups and roles. Cloud groups are now displayed correctly in file permissions and local groups without using on-premises Active Directory. No user action is required.
Camera pan and tilt controls Settings > Bluetooth & devices > Cameras Open Settings > Bluetooth & devices > Cameras, select a supported camera, and use the new pan and tilt controls to adjust the camera view.
Built-in Sysmon Optional Features or Command Prompt To enable, open Settings > System > Optional Features and add Sysmon, or run the command: Dism /Online /Enable-Feature /FeatureName:Sysmon. After installation, run: sysmon -i to install the Sysmon service and start logging system events.
Widget settings page Widgets board Open the Widgets board and click the settings icon. Widget settings now open on a separate page instead of a popup window.
Desktop background .webp support Settings > Personalization > Background Open Settings > Personalization > Background, click "Browse photos" and select a .webp image file to set it as your desktop background.
Search process icon Task Manager Open Task Manager (Ctrl + Shift + Esc). The search process icon now uses a magnifying glass icon. No user action is required.
Storage settings dialog boxes Settings > System > Storage Open Settings > System > Storage to view the updated dialog boxes. Temporary file scanning performance has been improved automatically.
Windows Update page responsiveness Settings > Windows Update Open Settings > Windows Update. The page responsiveness has been improved automatically. No user action is required.
Login and lock screen reliability Lock screen The login screen reliability has been increased automatically. No user action is required.
Nearby sharing large file transfers Settings > System > Nearby sharing Open Settings > System > Nearby sharing and ensure the feature is enabled. Large file transfer reliability has been improved automatically.
Projection panel (Win + P) Press Win + P Press Win + P to open the projection panel. The stability of the projection panel has been improved automatically.
Print spooler performance Print spooler service (spoolsv.exe) The print spooler service performance has been improved automatically under large job volumes. No user action is required.
Extract All button for non-ZIP archives File Explorer Select a non-ZIP archive file in File Explorer, then click "Extract All" in the command bar. The "Extract All" button is now available for non-ZIP archive formats.
File Explorer new instance issue File Explorer Fixed automatically. Shift + click or middle mouse click on an icon no longer opens a new Explorer instance unnecessarily.
Network section device display File Explorer > Network Open File Explorer and navigate to Network. The reliability of device display has been improved automatically.
Display performance and sleep mode Display settings Display performance and exit from sleep mode have been optimized automatically, including for laptops with the lid closed connected via docking station. No user action is required.
Taskbar auto-hide, Windows security popups, print dialog visual fixes Taskbar, Windows Security, Print dialog Minor visual issues related to automatic taskbar hiding, Windows security popups, and the print dialog have been fixed automatically. No user action is required.


The last 10 Windows updates:

Update Build Version Windows Channel Date
KB5121157 28020.2818 26H1 Windows 11 Beta 2026-08-31
KB5121158 28120.2824 26H1 Windows 11 Experimental 2026-08-31
KB5121794 26300.9278 26H2 Windows 11 Preview 2026-08-27
KB5121132 28120.2760 26H1 Windows 11 Experimental 2026-08-21
KB5124040 26220.9223 25H2 Windows 11 Beta 2026-08-21
KB5124042 26340.9233 26H2 Windows 11 Experimental 2026-08-21
KB5121106 28020.2731 26H1 Windows 11 Beta 2026-08-17
KB5121109 28120.2738 26H1 Windows 11 Experimental 2026-08-17
KB5124036 26220.9202 25H2 Windows 11 Beta 2026-08-17
KB5124038 26340.9212 26H2 Windows 11 Experimental 2026-08-17