New Update Windows 11 June 2026 Patch Tuesday (KB5094126)

[Gandalf_The_Grey]

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.

https://www.neowin.net/news/windows-11-kb5094126-june-2026-patch-tuesday-update-now-available-to-download/

 

[Minimalist]

I installed those updates without a problem. During update system rebooted 3 times.

 

[Parkinsond]

I installed those updates without a problem. During update system rebooted 3 times.

Solitary reboot with the new start menu finally.

 

[oldschool]

I installed those updates without a problem. During update system rebooted 3 times.

The same here. It seems to be more common with recent updates.

 

[Minimalist]

Solitary reboot with the new start menu finally.

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.

 

[Sorrento]

New start stuck around here for a while, hoping it don't change back as I've got used to it & I'm rather fussy about the start menu

 

[lokamoka820]

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.

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.

 

[bobdoe]

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.

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.

 

[Minimalist]

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.

I've checked my update history and don't see repair version installations. Only regular updates. I also pause updates after installing them.

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.

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

 

[Parkinsond]

The white flashing of new tab in Windows explorer on dark mode is gone

 

[SeriousHoax]

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.

 

[Brownie2019]

The update brings a low-latency profile, speeds up search, and patches hundreds of flaws.
The latest Patch Tuesday update for Windows 11 is among the heaviest in recent memory, bringing a new low-latency mode for smoother system navigation in addition to new features and hundreds of bug and exploit patches. It's a much needed relief package for Windows 11 as Microsoft puts a renewed focus on its flagship operating system, which has fallen into ill repute among tech enthusiasts over the past several years. The Redmond giant is now dumping Copilot buttons and shipping improvements to UX and performance in long-abandoned areas of the OS.

Users will see the June update as KB5094126 (OS Builds 26200.8655 and 26100.8655) in Windows Update. The big news here is the low-latency profile, which should help to alleviate slow loading times for core system shell elements such as the Start Menu, Action Center, and Search, as well as when launching apps. It's a simple trick. When a user clicks to open a system element or app, the CPU immediately jumps to its maximum clock speed for a second or three, then jumps back down, providing just enough performance headroom to speed up the launch. Previously, the CPU would need to ramp up with increased load, which could exacerbate sluggish launches. While the low-latency profile is included in the June security update, it won't be turned on immediately for everybody. You can check whether it's enabled by watching a live view of your CPU speed in Task Manager or a third-party tool like HWiNFO64. If enabled, you'll see a very brief spike in CPU activity when you open a system flyaway element like those mentioned above.

Microsoft has been making improvements to the Start Menu for a few months now, and the low-latency profile is more of a capstone on those upgrades. Mine has been much more responsive recently, whereas before all the fixes, I'd often wait a few seconds for it to open. The June update has also made a noticeable improvement in app launch speeds, even on my rather beefy gaming system. As explained by Neowin, there are even more upgrades coming in a future public build, including the ability to remove and add every section of the Start Menu. You can even turn off everything, so that when the Start Menu opens, you'll only see a notice reading, "All Start sections are turned off." User choice? In 2026? Pinch me.

Other Windows 11 bugbears have been bonked with this update, including improvements to downloads from the Windows Store. Previously, downloading and installing updates for apps and system components could be bafflingly slow for many users. That process should now be a lot zippier. Windows Search is now also a bit snappier, as it will begin to surface results after two characters are entered. That's a big improvement if you're the kind of person who likes to launch apps by pressing the Start key and typing, or if you use Search frequently.

New features in the June update include multi-app camera support, so you can now be on a Zoom call and take selfies at the same time. It also brings Shared Audio, which allows Windows to broadcast audio to two Bluetooth LE capable headphones or earbuds. Too, you can finally name your user folder to whatever you like when setting up a new Windows install. Lastly, there are new NPU monitoring tools in Task Manager, if you happen to have a PC with a dedicated AI chip.

The biggest change is one you'll never see. Microsoft has patched a staggering 206 security vulnerabilities, many of which were rated critical or severe, with threats ranging from privilege escalation and remote code execution to information disclosure and spoofing, among other things. One fix (CVE-2026-45657) was especially critical, being a kernel-level remote code execution vulnerability with a threat score of 9.8. Microsoft said in a blog post from May that AI is supercharging vulnerability discovery. Both white and black hat researchers are able to run penetration testing on an inhuman scale, and Microsoft needs to stay ahead in that arms race to keep Windows systems secure.

Read More: Windows 11 sucks slightly less now, thanks to a June update - Engadget