Windows 11 faster app launches are starting to arrive, and Microsoft Edge is the first app to get them. A new Release Preview update stops Windows from starting a throwaway helper process when you open an app that’s already running in the background.
The change is small, but it targets something you do dozens of times a day. Here are the quick facts before we get into the details.
- Update: KB5127936, builds 26200.9807 (25H2) and 26300.9807 (26H2)
- Released to the Release Preview channel on October 16, 2026
- Works for: Edge only, and only when it’s already running in the background
- Rollout: gradual, so installing the update doesn’t guarantee you’ll see it
If you only want to know whether to expect a speed jump on every app, the answer is no, not yet. Read on for why.
How Windows 11 faster app launches actually work
Until now, opening an app that was already running still kicked off a short-lived process first. That process checked for a running copy, handed over your request, and then quit. It was a detour you never saw but your PC still paid for.
Microsoft’s release notes say Windows now routes your request straight to the running instance. That applies when you click a link, or open Edge from the taskbar or Start menu. Microsoft says the shorter path helps most on busy devices when you’re multitasking.
Because it removes work instead of adding it, there’s no extra memory cost. That’s different from tricks like startup preloading, which keep more processes sitting in RAM.
Warm launches get quicker, cold starts don’t
The speed-up only applies when the app is already alive. Here’s how the common situations compare.
| Situation | Does it get faster? |
|---|---|
| Edge already running in the background | Yes, requests go straight to the running copy |
| Edge opened for the first time after a restart | No, a cold start looks the same as before |
| Links that open in Edge | Yes, only when Edge is the default handler |
| Other apps such as Spotify or Discord | Not yet, they’d need to adopt it first |
Microsoft hasn’t published timing numbers. Windows Latest tested on a small VM with 4GB of RAM. Edge opened at the same speed after a restart, but noticeably quicker when other apps like Store and Paint were already open.
Edge’s Startup boost keeps it running in the background, so for many people warm launches are the normal case.
Why you might not see it yet
The feature sits under “gradual rollout” in the release notes. Microsoft turns it on for some PCs first and widens it over time, so two people on the same build can get different results. You can’t force it on yourself.
Windows Latest suggests it could reach the optional update later in October or the November 10 Patch Tuesday release, though that’s the site’s expectation, not a Microsoft date. Some PCs will likely wait longer.
To check your build, press the Windows key, type winver and look for 26200.9807 or 26300.9807. Release Preview builds are meant for testers, so most people are better off waiting for the regular update. If you’d rather stick to the stable version of Windows 11, our guide to getting Windows 11 26H2 covers the safer route.
What it means for other apps
Microsoft calls this “the first step in a broader Windows capability that any app can adopt.” That’s the part worth watching. If browsers, chat apps and music players use it, the whole desktop could feel snappier without using more RAM.
There’s a catch for developers. According to Windows Latest, the APIs are a Limited Access Feature that needs an unlock token from Microsoft. Apps also still have to keep their own single-instance code. So expect third-party support to take a while, if it comes at all.
What else shipped in the same update
KB5127936 isn’t only about launches. These are the other changes Microsoft lists.
- A faster File Explorer right-click menu with a Customize menu option, plus ~ support in the address bar
- Cloud rebuild, which reinstalls Windows without a USB drive, covered in our cloud rebuild guide
- Per-monitor Magnifier zoom, which we explained in our Magnifier post
- IPv6 CLAT support so IPv4-only apps work on IPv6-only networks
- Adaptive hibernate that hibernates less above 80% battery and earlier below 10%
The File Explorer and hibernate changes are the ones most people will notice day to day.
Frequently Asked Questions
Does Windows 11 make every app open faster now?
No. Only Edge uses the new faster path so far, and only when it’s already running. Other apps need to adopt the feature first.
Can I turn on the Edge launch speed-up manually?
Not at the moment. It’s part of a gradual rollout, so Microsoft decides when it switches on for your PC.
Is KB5127936 safe to install?
It’s a Release Preview update, meant for testing before the wider release. If you rely on your PC for work, wait for the regular update.
Will it use more RAM?
No. It removes an extra process rather than keeping more apps preloaded in memory.
Is it worth installing the preview?
Probably not just for this. Edge launching a bit quicker is nice, but Microsoft hasn’t shown numbers and the feature is staged, so you may not even get it. Wait for the stable update, and treat this as an early sign that Microsoft finally cares about the small delays that make Windows feel slow. The real win comes if other apps follow.
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