KB5094126 low-latency – Windows 11’s June Patch Tuesday update (KB5094126) adds a low-latency profile aimed at making the Start Menu, Action Center, Search, and app launches feel faster. The same update delivers hundreds of bug fixes and patches 206 security vulnerabilities, includin
On a day when Windows 11 has too often felt like it takes a breath before it moves, Microsoft’s June Patch Tuesday update lands with a promise that’s simple enough to test: when you click to open something, the system should respond faster.
The update is KB5094126, showing up in Windows Update for OS Builds 26200.8655 and 26100.8655. For many users, the standout change won’t be a new panel or a cleaner icon set. It’s a low-latency profile designed to reduce delays in core system shell elements like the Start Menu. Action Center. and Search. plus when launching apps.
The mechanism is almost mechanical in its clarity. When you open a system element or an app. the CPU immediately jumps to its maximum clock speed for a second or three. then drops back down. Previously, the CPU would ramp up as the load increased—something that could make sluggish launches worse. The low-latency profile is included in the June security update. but it won’t be turned on for everyone right away.
To see whether it’s enabled, users can check Task Manager or use a tool such as HWiNFO64. If it’s active, you should notice a very brief spike in CPU activity when opening flyaway elements like the Start Menu, Action Center, or Search.
Microsoft has been working on Start Menu responsiveness for a few months. and the low-latency profile is framed as a capstone to those fixes. In the meantime. the update also targets the kind of waiting that frustrates people long before they decide whether to blame their hardware. The June update improves app launch speeds as well, and it’s meant to be noticeable even beyond high-end PCs.
There’s also a more granular level of control coming down the line in future public builds. The updates are said to include the ability to remove and add every section of the Start Menu. even turning everything off so the Start Menu opens with only a notice: “All Start sections are turned off.” For anyone who remembers how locked down Windows 11’s interface has felt. that shift lands like a long overdue reset.
Not all the improvements are about speed. The update tackles longstanding friction in Windows Store downloads and installations. Previously. downloading and installing updates for apps and system components could be bafflingly slow for many users—something the June patch is now meant to make “a lot zippier.” Windows Search also gets a smaller but tangible upgrade: results will begin to surface after two characters are entered. making the Start key-and-type workflow feel less like a waiting game.
Then there are the feature additions that show up at the surface level. The June update adds multi-app camera support. letting users be on a Zoom call and take selfies at the same time. It also introduces Shared Audio, which allows Windows to broadcast audio to two Bluetooth LE capable headphones or earbuds. And during setup, users can finally name their user folder to whatever they like when configuring a new Windows install.
For the AI hardware crowd, Microsoft adds new NPU monitoring tools in Task Manager—if you have a PC with a dedicated AI chip.
But the most consequential change is the one you won’t feel while clicking around. Microsoft has patched 206 security vulnerabilities in this update. Many are rated critical or severe. covering threats that include privilege escalation and remote code execution. along with information disclosure and spoofing. One fix stands out for its severity: CVE-2026-45657. described as a kernel-level remote code execution vulnerability with a threat score of 9.8.
In a blog post from May. Microsoft said AI is supercharging vulnerability discovery—pushing security testing to a scale where both white-hat and black-hat researchers can run penetration testing “on an inhuman scale.” With that in mind. the June update reads less like a routine tune-up and more like a bid to keep Windows secure while also trying to stop users from feeling every delay every day.
Windows 11 KB5094126 Patch Tuesday low-latency profile Start Menu Action Center Windows Search security vulnerabilities CVE-2026-45657 NPU monitoring Shared Audio Windows Store updates