New Update Windows 11 KB5124010 out with a long list of new features (Preview Update)

Gandalf_The_Grey

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Microsoft has released Windows 11 preview update KB5124010 for versions 25H2 and 24H2, bringing them to builds 26200.9550 and 26100.9550. The update adds Copilot key remapping, Emoji 17.0, new touchpad scrolling controls, and changes to File Explorer previews for downloaded files.

It also lets WinRE reuse saved Wi-Fi profiles and removes PC-to-PC Migration from Windows Backup. Most of the new features are rolling out gradually.
 


Hi, this looks like a preview update worth treating cautiously rather than an urgent install—especially on a gaming PC. The three linked reports together suggest that the advertised feature list may not match what every user actually receives, while game-crash reports remain an unresolved practical concern.

What the reports mean in practice​

Because KB5124010 is described as a preview update, it is primarily an early delivery of non-security changes. Most users can wait for the regular cumulative update instead of volunteering their main PC for extra quality assurance.

The reported Battlefield 6 crashes do not yet establish that every installation is affected, nor do they identify a confirmed underlying cause. Still, someone who plays the affected game has little reason to install an optional preview merely for features that are also being rolled out gradually.

The WinRE discrepancy is separate: it suggests that at least one feature attributed to this package may not actually be present as initially reported. A build number alone also does not guarantee immediate access to staged features; Microsoft commonly enables those progressively.

Sensible choices​

  • Stable everyday or gaming PC: skip the preview and wait for the normal cumulative release.
  • Test machine: install it only if the listed changes are useful and you are prepared to roll it back.
  • Already installed and everything works: there is no reason to uninstall it solely because other users reported trouble.
  • Games began crashing only after installation: check the game publisher’s and Microsoft’s current known-issue information, then consider uninstalling this preview through Settings > Windows Update > Update history > Uninstall updates. Pause before reinstalling it automatically.

If rollback restores stability under the same game and driver conditions, that strongly implicates the update interaction, but it still would not prove the precise component responsible. Changing the graphics driver at the same time would muddy that comparison nicely—Windows troubleshooting already has enough fog without manufacturing more.
 
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No problems since reinstall, no roll backs just smooth sailing. For the future I'm going to reinstall Windows over the top every 6months.

SFC/DISM work sometimes but re-install works better.
To be honest, this is totally unnecessary. You're only wasting your SSD writes. No need to reinstall Windows unless you're experiencing problems. Even if SFC and DISM commands give you errors, doesn't mean there are problems with the installation itself. These tools are unreliable way to check if the Windows installation is okay or not.
 
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No problems since reinstall, no roll backs just smooth sailing. For the future I'm going to reinstall Windows over the top every 6months.

SFC/DISM work sometimes but re-install works better.
Dare I ask if you have installed this latest preview? I realise it wasn't too good last month with some very small issues, but I would not let that put you off, I would say go for it & be brave :p
 
To be honest, this is totally unnecessary. You're only wasting your SSD writes. No need to reinstall Windows unless you're experiencing problems. Even if SFC and DISM commands give you errors, doesn't mean there are problems with the installation itself. These tools are unreliable way to check if the Windows installation is okay or not.
What solution do you recommend for repeatedly rolling back updates, instead of reinstalling the system? For example, is using the "Fix problems using Windows Update" option helpful? And is it safer with regard to writing to the SSD?
 
What solution do you recommend for repeatedly rolling back updates, instead of reinstalling the system? For example, is using the "Fix problems using Windows Update" option helpful? And is it safer with regard to writing to the SSD?
I recommend letting Windows install updates on its own. Not even going to the Windows Update section.

That way you won't have to roll back updates at all. Because Windows will install the updates on its own once they verify installing doesn't have side effects on your PC configuration.

This is the best Windows advice I got and after following it for a few years, I can confirm it works.
 
Yet Windows update had the new preview ready to install. So I have postponed updates for a month at the moment, or until I see here that it is safe to install.
If you have an option to get the latest updates as soon as they are available disabled, then preview updates won't get installed automatically. No reason to disable Windows Update really.
 
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If you have an option to get the latest updates as soon as they are available disabled, then preview updates won't get installed automatically. No reason to disable Windows Update really.

Well, the funny thing is... I have 'get the latest updates as soon as they are available disabled'. I disabled that somewhere in the last half year of 2025.
 
To be honest, this is totally unnecessary. You're only wasting your SSD writes. No need to reinstall Windows unless you're experiencing problems. Even if SFC and DISM commands give you errors, doesn't mean there are problems with the installation itself. These tools are unreliable way to check if the Windows installation is okay or not.

Captain obvious here. Obviously I was experiencing problems hence the re-install. Sometimes DISM/SFCSCANNOW does not work to fix Windows issues.


Dare I ask if you have installed this latest preview? I realise it wasn't too good last month with some very small issues, but I would not let that put you off, I would say go for it & be brave :p
Yes and it worked after a fresh re-install of the OS. No problems except for the garbage Intel GPU drivers that either install every time I boot or manually never install.

I can live with it. Anyway I'm going to donate my PC to Kaspersky or the malware museum when I finish with it.
 

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