Microsoft has released a new optional update for Windows 11, dubbed KB5120998, which brings with it 35 changes and fixes to the operating system. This update is not a security patch, but rather a quality improvement release that includes tweaks to the Start menu, taskbar, and Windows search, among other features.
The update, which is currently available for Windows 11 versions 25H2 and 24H2, has been designed with IT administrators in mind. It allows them to test bug fixes, improvements, and new features before they are rolled out to all users during next month’s Patch Tuesday release. While this update doesn’t include security fixes, it does provide a range of quality improvements that can enhance the overall user experience.
One of the most notable changes included in KB5120998 is the ability for users to customize the taskbar to their liking. After installing the update, users will be able to move the taskbar to any side of their screen, from the bottom to the top or left to right, and even choose a smaller taskbar option that reduces the height and size of taskbar icons. Additionally, Microsoft has added new options for customizing the Start menu, allowing users to independently show or hide sections such as Pinned, Recommended, and All.
Another significant change is the introduction of administrator protection, a security feature designed to harden the security against elevation-of-privilege attacks by introducing profile separation. This feature is turned off by default but can be enabled using OMA-URI in Microsoft Intune or through Group Policy.
Installing KB5120998 is relatively straightforward. Users can do so by opening Windows Settings, clicking on Windows Update, and then checking for updates. Alternatively, they can manually download and install the update from the Microsoft Update Catalog.
While this optional update may not be a priority for all users, it does offer a range of quality improvements that can enhance their overall experience with Windows 11. Whether you’re an IT administrator or just a regular user, KB5120998 is definitely worth considering if you want to get the most out of your operating system.
One thing to note is that Microsoft has warned customers that their systems may reboot one more time after deploying this update and future updates over the next several months due to a Secure Boot certificate update. This is an important reminder for users who have automatic updates enabled, as it may cause inconvenience if they are not expecting it.
As always, it’s essential to keep your operating system up-to-date with the latest security patches and quality improvements. While this update doesn’t include any critical security fixes, it does demonstrate Microsoft’s ongoing commitment to improving the user experience of Windows 11.
Source: Bleeping Computer — 2026-08-28