Windows 11 KB5124010 hits Release Preview with File Explorer improvements, Emoji 17, Tips widget, Copilot key remapping, and more

Microsoft has released Windows 11 Insider Preview Builds 26100.9539 and 26200.9539 (KB5124010) to the Release Preview Channel for Windows 11 versions 24H2 and 25H2. The September 10 update is rolling out in phases, meaning some features may take time to reach all eligible PCs.

Windows 11 gets Emoji 17.0, File Explorer improvements, and more

The latest Release Preview build packs several noticeable changes across Windows 11. File Explorer is getting better preview handling for downloaded files, with HTML files now showing a Preview anyway option while non-HTML files such as PDFs can be previewed automatically. File Explorer Home also remembers whether sections were expanded or collapsed, while cloud-file thumbnails and the Details pane receive reliability improvements.

Microsoft is also adding Emoji 17.0, bringing new emoji and refreshed designs for several existing ones. Windows 11 is getting a new Tips widget as well, which can provide quick guidance from the Widgets board or lock screen.

For accessibility, Microsoft is introducing an Open apps maximized option that automatically opens applications maximized. The Magnifier also gets a visual refresh with updated icons and improved spacing while keeping its existing controls and shortcuts.

Another useful addition comes to precision touchpads. Users can now scroll vertically with one finger from the left or right edge and enable automatic scrolling by moving a finger toward the edge while scrolling.

Copilot key remapping, Camera Roll Backup, and more

Microsoft is also expanding customization options. Users can now remap the Copilot key to Right Ctrl or the Context Menu key, while desktop background handling receives several reliability and quality improvements. Windows 11 also gains Camera Roll Backup, allowing eligible users to back up photos to OneDrive through Settings.

Bluetooth users should see improvements to connection reliability, audio stability, microphone compatibility and LE Audio performance. Microsoft has also improved several Bluetooth-related Settings pages.

One of the more interesting changes is coming to Windows Recovery Environment (WinRE). Windows can now automatically reuse eligible Wi-Fi profiles already saved on the PC, allowing supported devices to connect to the internet during recovery scenarios such as quick machine recovery or cloud rebuilds. Microsoft is also adding a remote-management plug-in for WinRE. Not to forget, PC-to-PC Migration is no longer available. Microsoft is instead directing users toward Windows Backup when moving files, settings and other supported data to a new PC.

All that said, this is a fairly feature-packed update, with improvements ranging from File Explorer and personalization to accessibility, Bluetooth, recovery and keyboard customization. As these features are still being rolled out gradually, not every Windows Insider will see everything immediately.