Microsoft has officially released Windows 11 version 25H2 after months of testing and previews. Delivered as a lightweight enablement package (eKB), 25H2 update is not a complete OS replacement but a light switch that turns on feature code already present on machines running 24H2. Microsoft stages new features inside regular cumulative updates in a disabled state. When the eKB is installed, it flips those flags, and a single restart activates the features, upgrading the device to 25H2 with minimal downtime. Because 24H2 and 25H2 share a servicing branch, they utilize the same codebase and servicing pipeline, which provides annual feature updates with the same efficiency and reliability as monthly updates. That helps reduce package size and installation time, making the transition from 24H2 to 25H2 about as easy as rebooting. The only difference between 25H2 and 24H2 is the support duration. For example, 25H2 Enterprise and Education Windows 11 versions move to a 36-month cycle, while Pro editions follow a 24-month cycle, typical for all Windows 11 24H2 builds.

With the 25H2 update, Microsoft is not focusing on significant under-the-hood changes or a visual overhaul, which were common in previous updates. Instead, the emphasis is primarily on security improvements. For instance, Microsoft is removing features like PowerShell 2.0 and Windows Management Instrumentation command-line (WMIC) during installation. These features were previously deprecated due to vulnerabilities to security exploits. Additionally, IT administrators now have the ability to remove pre-installed Microsoft default apps using Group Policy/MDM CSP on Enterprise and EDU devices.