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Microsoft has released Windows 11 Insider Preview Build 25915 to Windows Insiders in the Canary Channel.





Announcing Windows 11 Insider Preview Build 25915

Hello Windows Insiders, today we are releasing Windows 11 Insider Preview Build 25915 to the Canary Channel. 

What’s new in Build 25915

New features from the Dev Channel

This build includes new features from the Dev Channel, such as The new Outlook for Windows.

Changes and Improvements

[Graphics]

  • We have improved refresh rate logic to allow different refresh rates on different monitors, depending on the refresh rate for each monitor and content shown on the screen. This will help most with refresh rate-dependent multitasking, like playing a game and watching a video at the same time.
  • While a Dynamic Refresh Rate (DRR) is selected and Battery saver is also enabled, Windows will remain at the lower refresh rate and not switch to the higher rate until after Battery saver is disabled.

Fixes for known issues

  • The issue that resulted in some Windows Insiders in the Canary Channel on ASUS devices or PCs with ASUS motherboards has been resolved and these Insiders should receive this flight.
  • Ethernet-connected devices will no longer lose network connectivity after updating to this build.

For developers

You can download the latest Windows Insider SDK at  aka.ms/windowsinsidersdk.

SDK NuGet packages are now also flighting at  NuGet Gallery | WindowsSDK which include:

These NuGet packages provide more granular access to the SDK and better integration in CI/CD pipelines.

SDK flights are now published for both the Canary and Dev Channels, so be sure to choose the right version for your Insider Channel.

Remember to use  adaptive code when targeting new APIs to make sure your app runs on all customer machines, particularly when building against the Dev Channel SDK.  Feature detection is recommended over OS version checks, as OS version checks are unreliable and will not work as expected in all cases.


Announcing Windows 11 Insider Preview Build 25915