Windows 11 Cumulative Updates KB5127648 and KB5126653 Released

Windows 11 October 2026 Patch Tuesday Updates KB527648 and KB5126653 Released

Microsoft has released the Windows 11 cumulative updates KB527648 and KB5126653 for versions 26H2, 25H2, 24H2, and 23H2. The October 2026 Patch Tuesday updates include security fixes, bug fixes, and several new Windows 11 features.

These updates include the October 2026 Patch Tuesday security patches, which address hundreds of vulnerabilities discovered in recent months.

How to install the October 2026 Windows 11 update

To install the update through Windows Update, open Start > Settings > Windows Update, then select Check for updates.

You can also download and install the update manually from the Microsoft Update Catalog.

This is the 10th Patch Tuesday release of 2026. The update is based on Windows 11 version 24H2, so Windows 11 versions 25H2 and 26H2 receive the same update. There are no exclusive changes for those versions.

What’s new in the Windows 11 October 2026 update?

The October 2026 cumulative update adds new emoji, improves File Explorer, expands accessibility and touchpad features, and includes reliability fixes across Windows 11.

File Explorer

• The preview pane now handles files downloaded from the web differently. HTML files display a Preview anyway button so users can acknowledge warnings before opening them. Non-HTML files, including PDFs, are automatically previewed.
• File Explorer Home now remembers whether sections are expanded or collapsed.
• Cloud file thumbnail previews in the details pane are more reliable, and the pane layout has been reorganized to make file properties easier to find.
• Windows 11 no longer clears the address bar contents when users click near the right side of the bar to enter edit mode.

Emoji

• Windows 11 now supports Emoji 17.0, including new emojis such as distorted faces, battle clouds, and hairy creatures. Press Windows + . to open the emoji panel.
• Several existing emojis have received design updates, including the saluting face, face with eyes looking upward, goose, lotus, and kissing cat.

Widgets

Windows 11 now includes the Tips widget, which provides short guidance about Windows features. To add it to a widget board, open the board, select Add widget, and choose Tips.

To add Tips to the lock screen, go to Settings > Personalization > Lock screen and add the widget.

Personalization and desktop backgrounds

• The Settings > Personalization > Background page has been improved.
• Windows 11 now supports DIB image files as desktop backgrounds.
• Desktop slideshow transitions are more reliable for newly created accounts.
• Background previews now use higher resolution.
• Background previews are displayed more reliably for users with portrait-mode monitors.
• Continuous desktop wallpaper changes are handled more reliably.
• Slideshow wallpapers can now be used across multiple desktops without automatically reverting to the Pictures folder.

Bluetooth and audio

The update includes multiple Bluetooth reliability, compatibility, and stability improvements.

• When users adjust the volume of a Bluetooth Classic Audio accessory during a voice call, the Windows Shell volume flyout displays the new volume level.
• Windows now reports connection status more accurately for disconnected accessories.
• Bluetooth and audio device management is more stable through the Settings > Bluetooth & devices page.
• The Bluetooth radio no longer appears enabled in Settings after the radio has turned off.
• Bluetooth audio compatibility and stability have been improved.
• Microphone compatibility with certain Bluetooth Classic Audio accessories has been improved.
• The update fixes an issue that could cause a crash with error code 0x139 when streaming Bluetooth audio.
• LE Audio accessories are now more reliable and perform better.
• Reliability has been improved for shared audio.

Accessibility

• Windows 11 adds an Open the app maximized accessibility setting. When enabled, apps automatically open maximized. To enable it, go to Settings > Accessibility > Visual effects.
• Navigation on the Bluetooth Quick Settings page has been improved for keyboard input, gamepad input, and Narrator.

Magnifier

• The Magnifier toolbar now has an updated icon that matches the Windows 11 visual design.
• Toolbar spacing and padding have been adjusted for a more consistent layout.
• Views, zoom controls, keyboard shortcuts, and speech continue to work as they did in previous versions.

Settings improvements

• Settings is more reliable when managing content on the Settings > Bluetooth & devices > Printers & scanners page.
• The Settings > Apps > Installed apps page now displays the version number at the top of packaged apps, matching other applications.
• Time picker controls now reflect the preferred 12-hour or 24-hour time format when setting active hours or scheduling Night light.
• The Allow multiple apps to use the camera at the same time option is available under Settings > Bluetooth & devices > Camera settings.

Touchpad gestures

The update adds more gesture controls for precision touchpads. These options are available under Settings > Bluetooth & devices > Touchpad:

• Scroll with one finger: Scroll vertically with one finger from the left or right side of the touchpad.
• Automatic scrolling: Move your finger close to the edge of the touchpad while scrolling to continue scrolling without lifting your finger.

The Scroll and zoom speed and Accelerate scrolling gesture controls were previously released in the July 2026 update, KB5101684.

Copilot key

The update allows the Copilot key to be remapped to the Right Ctrl key or the Context menu key. This helps users maintain familiar keyboard shortcuts and accessibility workflows. Microsoft provides more information in its guide to updating the Copilot key on Windows devices.

Camera roll backup

The update introduces Camera roll backup in Settings, allowing eligible users to use OneDrive to protect their photos. The feature is available from the Settings home or Account page. Users can scan the QR code to complete setup on their phone.

Fonts

• Windows 11 adds support for the Garai and Belia Elfe scripts in the Everyma font. Garai was encoded with Unicode 16.0, while Belia Elfe was encoded with Unicode 17.0.
• The update improves the design of Ebrima’s Adlam glyphs to make them more consistent with the current Unicode standard.

Windows Recovery Environment

The update adds the Recovery Remote Management plugin to extend Windows Recovery Environment management capabilities for mobile device management providers. See Microsoft’s Recovery remote management overview for more information.

Kiosk mode

• Windows + Tab is now disabled when using a restricted user experience kiosk.
• Windows + A and Windows + C are now disabled when using single-app kiosk mode.

Windows Backup

PC-to-PC migration is no longer available. The feature was introduced through a gradual rollout and allowed users to transfer files and settings directly from an old PC when setting up a new Windows PC.

Microsoft recommends using Windows Backup to back up and restore files, settings, and other supported items when moving to a new computer. See Microsoft’s guide to backing up and restoring with Windows Backup.

Power and battery

The update improves display behavior and performance in scenarios where a connected laptop incorrectly detects a transition from AC power to battery power.

Known issues in the October 2026 Patch Tuesday update

Microsoft is not aware of any new issues with this month’s Patch Tuesday update. However, some PCs may continue to experience audio problems after installing the update. The issue affects USB 1.0 audio devices and is not widespread.

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