Microsoft’s Accelerated App Launches feature applies to Microsoft Edge 150 or later on Windows 11 versions 25H2, 26H1, or 26H2, with update KB5127936 or later. The performance figures Microsoft announced on October 29, 2026, compare launches with and without the feature when Edge is already running. Microsoft’s announcement sets out the browser and Windows requirements.
How Accelerated App Launches works
When an Edge process starts, it registers with Windows. On a later launch, Windows can use that registration to notify the running Edge process directly, instead of starting an intermediary process to find it. Microsoft names the Start menu, taskbar, and supported links that open in Edge by default as launch routes for the feature. Microsoft describes the process.
Microsoft reports a 15% launch-speed improvement for most users and gains of up to 33% under heavy multitasking. Both figures compare launching Edge with versus without Accelerated App Launches while Edge is already running. The maximum applies to heavy multitasking, not every launch.
Which Windows and Edge versions qualify
Microsoft lists Edge 150 or later and Windows 11 25H2, 26H1, or 26H2 with KB5127936 or later. Microsoft Support dates KB5127936 to October 28, 2026, and identifies it as a preview update. Microsoft says delivery is gradual and availability can vary by device. The update notes include the feature’s Windows compatibility details.
Edge must already be running when launched through one of the supported routes. It can be open in a visible window or running in the background. Startup Boost is one example of a feature that can keep Edge running in the background; Microsoft does not list it as a requirement.
Microsoft is contributing its work to Chromium so other Chromium-based browsers may benefit in the future.
