New Update Windows 11 June 2026 Patch Tuesday (KB5094126)

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Microsoft has released the June 2026 Patch Tuesday updates for Windows 11 25H2, 24H2. The 25H2 and 24H2 update is provided via KB5094126 (manual download link below), build 26100.8655 on 24H2, and build 26200.8655 on 25H2, after applying the updates. Windows 11 23H2 is available under KB5093998 (manual download link below) (build 22631.7219).

Microsoft has not published changelog yet. We will update the article once it's out. [Update: It's out]
  • [Secure Boot] With this update, Windows quality updates include additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Devices receive the new certificates only after demonstrating sufficient successful update signals, maintaining a controlled and phased rollout.
  • [Virtualization] Fixed: This update addresses an issue that could result in Stop errors HYPERVISOR_ERROR (0x20001) and KMODE_EXCEPTION_NOT_HANDLED (0x1E) after installing KB5089573 on some devices during system restarts, virtual machine operations, or while running some gaming applications
Microsoft says there are no known issues.
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Minimalist said:
I've had new menu enabled after each update last couple of months. Each time, after few days it got reverted to the old one. I will wait and see if new one will stick around longer this month.
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Your situation sounds similar to mine. Are you sure the updates are problem-free? In my case, monthly updates usually go smoothly, but a few days later, I noticed the Start menu had reverted to the old version. When I checked my update history, it showed "Windows 11, version 25H2 (repair version)" had been installed.
 
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Minimalist said:
I've had new menu enabled after each update last couple of months. Each time, after few days it got reverted to the old one. I will wait and see if new one will stick around longer this month.
Click to expand...
Perplexity on possible ms services responsible...

Microsoft items to inspect​

  • Windows Explorer / shell process. Start menu UI is part of the Windows shell, so if Explorer restarts or crashes, the menu can appear to reset or change state.
  • User Profile Service. If a profile issue is causing settings not to stick, Start-related preferences may seem to revert after sign-in.
  • Task Scheduler. Some apps and Windows components reapply settings at logon or after update, so a scheduled task can make a menu change come back.
  • Group Policy / policy refresh. If your PC is managed or has policy entries, Start layout and Start menu behavior can be enforced again after reboot or refresh.
  • Windows Update / update-related components. A feature rollout or update can switch Start menu behavior without a local service being at fault.
 
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lokamoka820 said:
Your situation sounds similar to mine. Are you sure the updates are problem-free? In my case, monthly updates usually go smoothly, but a few days later, I noticed the Start menu had reverted to the old version. When I checked my update history, it showed "Windows 11, version 25H2 (repair version)" had been installed.
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I've checked my update history and don't see repair version installations. Only regular updates. I also pause updates after installing them.

bobdoe said:
Perplexity on possible ms services responsible...

Microsoft items to inspect​

  • Windows Explorer / shell process. Start menu UI is part of the Windows shell, so if Explorer restarts or crashes, the menu can appear to reset or change state.
  • User Profile Service. If a profile issue is causing settings not to stick, Start-related preferences may seem to revert after sign-in.
  • Task Scheduler. Some apps and Windows components reapply settings at logon or after update, so a scheduled task can make a menu change come back.
  • Group Policy / policy refresh. If your PC is managed or has policy entries, Start layout and Start menu behavior can be enforced again after reboot or refresh.
  • Windows Update / update-related components. A feature rollout or update can switch Start menu behavior without a local service being at fault.
Click to expand...
Thanks for suggestions. On my system change happens after one of system reboots. It's not a first reboot, but one after few days. I've checked my group policy settings but didn't find any change in start menu section.

TBH I prefer old look of start menu, so I don't mind if it gets reverted :)
 
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I got the new start menu a long time ago. For me, it didn't revert; however it removed all my start menu pinned apps a couple of times. Not even removed really, because when I right clicked that app again to pin it was showing the option unpin meaning it's already pinned. The shortcuts were even in that start menu folder (forgot the location).
Last month, I freshly installed 25H2 and got the new start menu with it from the get-go. A couple of days later, the same pinned apps vanishing issue happened again. It hasn't happened again since then.
I installed the preview update before this one, and my update didn't download anything else this Patch Tuesday, but I restored my Hasleo my system image back to a 24th May date (for going back to MD from ESET), so I was offered this update, which I installed.
Hopefully, it won't delete my pinned apps again. That's a bizarre bug.
Also, I manually enabled the low-latency profile using vivetool, which seems to have slightly improved Microsoft Defender's app launching performance. I had most of the things modified using Configure Defender, and going back to the default further improved the speed on my PC. It's still slower than ESET and Kaspersky, of course, on all things except web-browsing but boosting CPU frequency is having a positive impact on Microsoft Defender.
 
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