KB5077239: Cumulative update for Windows 11, version 26H1, February 2026. New camera, accessibility and gaming features; recovery hangs fixed
Adds features across Windows 11 26H1, including camera effects, cross-device activities and handheld gaming. It also addresses issues such as BitLocker recovery and Windows Sandbox hangs.
Does it affect you? Applies to: Devices running Windows 11, version 26H1, on x64 or Arm64. Some features are limited to Copilot+ PCs, supported devices, markets, or configurations.
Review notes Additional details from the official release notes (1) Read note
- What changes The update includes version 1.2601.1268.0 of Image Search, Content Extraction, Semantic Analysis, and Settings Model. These AI component updates apply to Copilot+ PCs.
The official sources are linked at the end of the page.
What changes
New features 30 changes
Agent in Settings
For: Copilot+ PC users
-
The Settings Agent supports more languages, including German, Portuguese, Spanish, Korean, Japanese, Hindi, Italian and Simplified Chinese.1
For Copilot+ PCs.
-
The Settings search results menu shows more results and adds a scroll bar so you can browse them.2
For Copilot+ PCs.
-
Recommended settings can show an inline agent option for settings you changed recently.3
For Copilot+ PCs.
-
A dialog explains when a setting cannot be adjusted further and offers an option to modify it.4
For Copilot+ PCs.
Click to Do
For: Copilot+ PC users
-
The context menu opens automatically when a large image or table appears on screen.5
Functionality varies by device and market.
Camera
For: Copilot+ PC users with a supported camera
-
Windows Studio Effects can be used with an additional camera, such as a USB webcam or a built-in rear camera.6
Choose a connected camera in Settings > Bluetooth & devices > Cameras, then enable Use Windows Studio Effects under Advanced camera options.
File Explorer
- Enterprise customers can use File Explorer Home on-hover actions for faster file management.7
-
File Explorer has a more consistent dark mode for file operations, progress displays and confirmation and error dialogs.15
Updates cover copy, move and delete dialogs, progress bars, chart views, skip and override confirmations, file selection and multiple error dialogs.
-
A simplified context menu groups common actions such as Share, Copy and Move in one menu.16
Initially available to a small group of devices while Microsoft evaluates the approach.
-
The Recommended section on the File Explorer homepage helps you find frequently used and recently downloaded files.17
Turn on Show Recommended under File Explorer > Options. Available to all users, including those signed in with personal Microsoft accounts.
Advanced Settings
-
You can turn Virtual Workspaces on or off in Advanced Settings to enable or disable virtual environments such as Hyper-V and Windows Sandbox.8
Find Virtual Workspaces at Settings > Systems > Advanced.
-
You can turn Virtual Workspaces on or off in Advanced Settings to enable or disable virtual environments such as Hyper-V and Windows Sandbox.8
Find Virtual Workspaces at Settings > Systems > Advanced.
Cross Device Resume
For: Users with supported Android phones
-
You can continue more activities from an Android phone on your PC, including Spotify playback, Office work and browsing.9
Vivo phone users can continue browsing from Vivo Browser. Users with phones from HONOR, OPPO, Samsung, vivo or Xiaomi can resume online files opened in the Microsoft Copilot app; files open in the corresponding Microsoft 365 app if installed, otherwise in the default browser. Offline files stored only on the phone are not supported.
Windows MIDI Services
For: Musicians and MIDI users
-
Windows adds expanded support for MIDI 1.0 and MIDI 2.0, shared MIDI ports, custom port names, app-to-app MIDI and performance improvements.10
The separate App SDK and Tools package enables inbox MIDI 2.0 features and includes MIDI Console and the MIDI Settings app. Releases are currently unsigned and might show a security warning.
Narrator
For: Narrator users
-
You can choose which details Narrator speaks about on-screen controls and change their order.11
These settings apply throughout the app.
Voice Access
For: Voice Access users
-
A redesigned setup helps you download a speech model, select an input microphone and learn about Voice Access.12
The speech model is for the language you choose.
Voice Typing
For: Voice Typing users
-
The Wait time before acting setting lets you change how long Voice Typing waits before running a voice command.13
The setting is intended to accommodate different speech patterns and improve recognition accuracy.
Windows Hello
For: Users with a supported ESS fingerprint reader
-
Windows Hello Enhanced Sign-in Security can use supported external fingerprint readers, including on desktop PCs.14
Connect a supported ESS fingerprint reader, then enroll under Settings > Accounts > Sign-in options.
Desktop Spotlight
For: Windows Spotlight users
-
When Windows Spotlight is your desktop background, its context menu offers Learn more about this background and Next desktop background.18
Set Windows Spotlight under Settings > Personalization > Background.
Gaming
For: Users of supported Windows 11 handheld devices
-
The full screen experience is available on more Windows 11 handheld devices, with a console-style Xbox interface and fewer background tasks.19
Turn it on at Settings > Gaming > Full screen experience and set Xbox as the home app. It can open from Task View or Game Bar, or start when the handheld boots.
Input
For: Users with a supported haptic-feedback pen
- Pens with haptic feedback can provide small vibrations when you interact with Windows, such as hovering over Close or snapping and resizing windows.20
Keyboard
For: Users of Arabic keyboard layouts
-
The Arabic 101 layout uses the right Alt key as AltGr for additional symbols, including the Saudi Riyal symbol with AltGr+S.21
Arabic 102 and Arabic 102 AZERTY layouts are updated similarly. The Saudi Riyal symbol is also available on the touch keyboard symbols page and expressive input panels currency tab. Language switching remains available with left Alt+Shift or Windows logo key+Spacebar.
Mobile Device Settings
-
You can add and manage mobile devices in Settings, including connected-camera use and access to phone files in File Explorer.22
Find the page under Settings > Bluetooth & Devices > Mobile Devices.
OneDrive
- A new OneDrive icon appears on the Settings Accounts homepage.23
Settings
-
Keyboard character-repeat delay and rate settings, and cursor blink rate, move from Control Panel into Settings.24
Find them under Settings > Accessibility > Keyboard and Settings > Accessibility > Text cursor, respectively.
Taskbar & System Tray
-
You can share an open app window with Copilot from the taskbar and ask Copilot Vision about what is displayed.25
Hover over an app icon and select Share with Copilot.
Windows Share
-
Drag tray supports sharing multiple files, shows more relevant apps and helps move files to a chosen folder.26
The feature is gradually rolling out; availability varies by device and market.
-
You can turn Drag tray on or off in Nearby sharing settings.27
Find the setting under Settings > System > Nearby sharing. Availability varies by device and market.
-
You can share OneDrive files through other apps using the options under Share using after selecting Copy link.28
You must be signed in to your Microsoft account. This feature is not available in the European Economic Area.
Secure Boot
-
New PowerShell features help manage the Secure Boot key rollout and check whether a device follows the latest Secure Boot policy.29
Get-SecureBootUEFIsupports-Decodedto display keys and certificates in readable form.Get-SecureBootSVNchecks the Secure Boot Security Version Number of the device's UEFI firmware and bootloader.
Improvements 24 changes
Click to Do
For: Copilot+ PC users
-
The context menu has a streamlined design that makes common actions such as Copy, Save, Share and Open easier to find.30
Functionality varies by device and market.
File Explorer
-
The File Explorer search box placeholder now highlights the enhanced Windows Search experience.31
For Copilot+ PCs.
- File Explorer responds better when you browse network locations.34
- File Explorer addresses cases where video thumbnails might not appear because of certain EXIF metadata.35
- File Explorer is less likely to show a toolbar unexpectedly.36
Windows Update
For: Windows Insider Program users
-
Joining the Windows Insider Program through Settings is less likely to get stuck.32
The change applies to joining through Settings > Windows Update.
Lock screen
- Underlying changes address cases where the lock screen becomes unresponsive.33
Logging into your PC
-
The first sign-in is more reliable when certain apps are configured to start automatically, reducing the chance that the taskbar does not appear.37
Addresses cases where Explorer.exe stops responding during the first sign-in.
Activation
For: Devices upgrading Windows
-
Windows license migration during upgrades is more reliable, reducing cases where the Activation troubleshooter is needed to complete the process.38
Addresses cases where a valid license does not migrate because the device cannot register its digital license.
Desktop icons
- Desktop icons are more likely to stay in place when you open or rename files.39
Input
-
The keyboard character-repeat delay labels are clearer in Settings.40
The labels are under Settings > Bluetooth & Devices > Keyboard.
User Account Control (UAC)
For: Users running Windows Terminal as an administrator from a non-admin account
- Running Windows Terminal as an administrator from a non-administrator account is more reliable and is less likely to make the PC unresponsive.41
Keyboard
- Keyboard backlights perform better on supported HID-compliant keyboards, helping keys remain visible in low light while adjusting to conserve power.42
Settings
Taskbar & System Tray
- Automatically hide the taskbar works more reliably and no longer turns off unexpectedly after a hidden-toolbar message.46
- Voice Access responds more reliably when you use the taskbar, including when you call out a number to choose an item.47
- Taskbar icons keep their expected size when enough space is available.48
Display and Graphics
Game Pass
For: Game Pass users
- References to Game Pass in Settings reflect updated branding and benefits.51
Start menu
- On devices with the new Start menu, the Windows Search panel matches the menu's size.52
BitLocker
For: BitLocker users
- BitLocker recovery is more reliable: the device no longer stops responding after you enter the recovery key.53
Fixes 6 changes
File Explorer
- When you right-click a file, its Open option shows the file type's default app icon instead of a generic icon.54
Windows Sandbox
For: Windows Sandbox users
- Windows Sandbox no longer has the startup issue that could make it stop responding and show error 0x800705b4.55
Display and Graphics
- Supported graphics cards no longer trigger the Unsupported graphics card detected message in affected games.56
Lock and Sign-in Screens
Smart cards
- You are less likely to see STATUS_NOT_SUPPORTED (0xc00000bb) when signing in with an ECC Smart Card Logon Credential.59
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2026-02-24
- Classification
- Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
- KB5077179
- Replaced by
- KB5079466
| Version | Build | Channel |
|---|---|---|
| 26H1 | 28000.1643 | General availability |
| 26H1 | 28000.1643 | Release Preview Channel |
Security
No vulnerabilities are listed for this update.
Downloads (Microsoft Update Catalog)
Updated components
6,941 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| Settings | 110 |
| Graphics and display | 49 |
| Networking | 43 |
| Printing | 38 |
| Security and sign-in | 36 |
| Remote Desktop | 35 |
| File Explorer and shell | 31 |
| Audio | 30 |
| Bluetooth | 30 |
| Windows Update | 30 |
| .NET networking | 20 |
| Hyper-V and virtualization | 18 |
Verified in package: changed files confirm Agent in Settings, Camera, Advanced Settings, Windows MIDI Services, Narrator, Windows Hello, Desktop Spotlight, Gaming, Mobile Device Settings, OneDrive, Settings, Windows Share, Secure Boot, File Explorer, Windows Update, Input, Game Pass, Start menu.
Sources
Cited passages from Microsoft's official notes (59)
-
1.
The Settings Agent now supports more languages, with expanded support for German, Portuguese, Spanish, Korean, Japanese, Hindi, Italian, and Chinese (Simplified).
support.microsoft.com -
2.
The search results menu displays more available results, making it easier to quickly find and modify your settings. A scroll bar lets you view all search results.
support.microsoft.com -
3.
Recommended settings now makes changes faster by showing an inline agent option for recently modified settings.
support.microsoft.com -
4.
A dialog now appears when settings can’t be adjusted further. It explains why and provides an option to modify the settings as needed.
support.microsoft.com -
5.
Whenever a large image or table appears on your screen, the context menu automatically opens so you can quickly access actions and view results.
support.microsoft.com -
6.
You can use Windows Studio Effects, which provides AI-powered camera enhancements, on an additional camera such as a USB webcam or your laptop’s built-in rear camera.
support.microsoft.com -
7.
File ExplorerHome on-hover actions for faster file management is now available for enterprise customers.
support.microsoft.com -
8.
You can now turn on Virtual Workspaces in Advanced Settings. Virtual Workspaces allow you to enable or disable virtual environments such as Hyper-V and Windows Sandbox.
support.microsoft.com -
9.
This update expands the functionality of Cross‑Device Resume. You can continue activities from your Android phone on your PC based on the apps and services you use, including resuming Spotify playback, working in Word, Excel, or PowerPoint, or continuing a browsing session.
support.microsoft.com -
10.
This update improves MIDI on Windows with enhanced support for MIDI 1.0 and MIDI 2.0, including full WinMM and WinRT MIDI 1.0 support with built-in translation, shared MIDI ports across apps, custom port names, loopback and app-to-app MIDI, plus performance improvements and bug fixes—delivering a better experience for musicians.
support.microsoft.com -
11.
You can choose which details are spoken and adjust their order to match how you navigate apps.
support.microsoft.com -
12.
The redesigned experience helps you download a speech model for your chosen language, select your preferred input microphone, and learn what Voice Access can help you do on your Windows PC.
support.microsoft.com -
13.
The Wait time before acting setting in Voice Typing enables you to adjust the delay before a voice command runs.
support.microsoft.com -
14.
Windows Hello Enhanced Sign-in Security (ESS) now supports peripheral fingerprint sensors.
support.microsoft.com -
15.
File Explorer now offers a more consistent dark mode experience. Key actions such as copy, move, and delete dialogs have been updated in both default and expanded views.
support.microsoft.com -
16.
This change will initially be available to a small group of devices as we evaluate the best approach.
support.microsoft.com -
17.
The Recommended section in File Explorer now makes it easier to access files you frequently use or recently downloaded.
support.microsoft.com -
18.
When Windows Spotlight is set as your desktop background (Settings > Personalization > Background), the context menu now includes two options: "Learn more about this background" and "Next desktop background".
support.microsoft.com -
19.
The full screen experience (FSE) is now available on more Windows 11 handheld devices after its initial launch on ASUS ROG Ally and ROG Ally X.
support.microsoft.com -
20.
Pens that support haptic feedback—small vibrations that simulate touch—now provide tactile responses when you interact with the Windows interface.
support.microsoft.com -
21.
The AltGr layer is now enabled for the Arabic 101 keyboard layout.
support.microsoft.com -
22.
You can add and manage your mobile devices in Settings under Bluetooth & Devices › Mobile Devices.
support.microsoft.com -
23.
The new OneDrive icon now appears in Settings > Accounts > Homepage.
support.microsoft.com -
24.
Keyboard settings for "character repeat delay and rate", and "cursor blink rate", have moved from Control Panel to Settings.
support.microsoft.com -
25.
You can now share an open app window with Copilot directly from the taskbar.
support.microsoft.com -
26.
Drag tray now supports multi-file sharing, shows more relevant apps, and makes it easy to move files to a chosen folder.
support.microsoft.com -
27.
You can now turn drag tray on or off from Settings > System > Nearby sharing.
support.microsoft.com -
28.
You can share OneDrive files through other apps.
support.microsoft.com -
29.
The
support.microsoft.comGet-SecureBootSVNcmdlet lets you check the Secure Boot Security Version Number (SVN) of your device’s UEFI firmware and bootloader, and report whether the device follows the latest Secure Boot policy. -
30.
The Click to Do context menu now has a streamlined design that makes it easier to access frequently used actions such as Copy, Save, Share, and Open.
support.microsoft.com -
31.
The File Explorer Search Box placeholder text has been updated to highlight the enhanced Windows Search experiences.
support.microsoft.com -
32.
It helps prevent situations where the process might get stuck when you join through Settings > Windows Update, so you can get started more smoothly.
support.microsoft.com -
33.
This update includes some underlying changes that help address cases where the lock screen might become unresponsive.
support.microsoft.com -
34.
This update includes some underlying changes that help improve responsiveness of File Explorer when navigating in network locations.
support.microsoft.com -
35.
File Explorer might unexpectedly not show thumbnails for video files containing certain EXIF metadata.
support.microsoft.com -
36.
File Explorer now provides a more consistent experience, preventing a toolbar from appearing unexpectedly.
support.microsoft.com -
37.
This update improves reliability where Explorer.exe might stop responding (hang) the first time you sign in to your PC, if certain apps were configured as startup apps.
support.microsoft.com -
38.
In some cases, a valid license might not migrate because the device couldn’t register its digital license, requiring the Activation troubleshooter to complete the process.
support.microsoft.com -
39.
Desktop icons now stay in place instead of moving unexpectedly.
support.microsoft.com -
40.
This update improves how the keyboard character repeat delay labels appear in Settings > Bluetooth & Devices > Keyboard.
support.microsoft.com -
41.
This update helps improves reliability when running Windows Terminal as an administrator from a non‑admin account, preventing the PC from becoming unresponsive.
support.microsoft.com -
42.
Keyboard backlight performance has improved on supported HID-compliant keyboards.
support.microsoft.com -
43.
"About" in Settings now has an updated layout that organizes device details and related options in one place.
support.microsoft.com -
44.
This update helps improve reliability when you navigate to Settings > Network & Internet. It prevents Settings from becoming unresponsive.
support.microsoft.com -
45.
This update improves the Settings search bar so it no longer overlaps the Minimize and Maximize buttons in the title bar.
support.microsoft.com -
46.
The Automatically hide the taskbar setting now works more reliably and no longer turns off unexpectedly after the message “A toolbar is already hidden on this side of your screen.” appears.
support.microsoft.com -
47.
Voice access now responds more reliably when you interact with the taskbar, including when you call out a number to choose an item.
support.microsoft.com -
48.
The update improves the taskbar icon experience and icons now keep their expected size when enough space is available.
support.microsoft.com -
49.
Performance has been improved when apps query monitors for their full list of supported modes.
support.microsoft.com -
50.
This update improves the brightness slider experience on all‑in‑one PCs, keeping your chosen level and helping you avoid unexpected brightness changes.
support.microsoft.com -
51.
References to Game Pass in Settings are now modified to reflect updated branding and benefits.
support.microsoft.com -
52.
For users with the new Start menu, the Windows Search panel now matches the new Start menu in size.
support.microsoft.com -
53.
Your device no longer stops responding after you enter your recovery key.
support.microsoft.com -
54.
When you right-click a file, the app icon next to the Open option might appear generic instead of showing the default app for that file type.
support.microsoft.com -
55.
This update addresses an issue that could cause Windows Sandbox to stop responding during start up and display error 0x800705b4.
support.microsoft.com -
56.
Recently certain games might display the message
support.microsoft.comUnsupported graphics card detected, although a supported graphics card is used. -
57.
It might be very slow the first time when signing into a new account.
support.microsoft.com -
58.
When your lock screen is set to slide show, there might be a memory leak.
support.microsoft.com -
59.
You might unexpectedly see
support.microsoft.comSTATUS_NOT_SUPPORTED (0xc00000bb)during sign on when using ECC Smart Card Logon Credential.
Checked automatically: 8 of 8 checks passed, 59 quoted passages · compared with Microsoft's page on Oct 20, 2026
- Quotes found in the official pages: passed
- Numbers found in the sources: passed
- Vulnerabilities from the dossier only: passed
- Links to allowed domains only: passed
- Every official change covered: passed
- Readable plain text: passed
- Changes confirmed by the file list: passed
- Sources agree: passed
A second AI read the text against the sources: correctness 4/5, clarity 4/5, completeness 4/5. How we work
Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake