Windows 10 Cumulative Update KB4556799: Everything You Need to Know

Microsoft has shipped new Windows 10 cumulative updates as part of the May 2020 Patch Tuesday cycle, including for Windows 10 version 1903 and 1909.

The two get the same cumulative update, as they share most of the code, so the changelog is exactly the same for both versions of Windows 10.

“Windows 10, versions 1903 and 1909 share a common core operating system and an identical set of system files. As a result, the new features in Windows 10, version 1909 were included in the recent monthly quality update for Windows 10, version 1903 (released October 8, 2019), but are currently in a dormant state. These new features will remain dormant until they are turned on using an enablement package, which is a small, quick-to-install “master switch” that simply activates the Windows 10, version 1909 features,” Microsoft explains.

First and foremost, the cumulative update for Windows 10 version 1903 and 1909 is KB4556799. It increases the OS build number as it follows:
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