Windows 10 build 19042.264

Windows 10 build 19042.264 is a build of Windows 10 version 20H2. The May 2020 cumulative update for Windows 10 version 2004 (KB4556803) contains references to a package called, and if the package is present, the operating system will report itself as version 2009 and build 19042 instead of 2004 and 19041 respectively.