Microsoft says it is already investigating reports
Windows 10 cumulative update KB4494441 was published as part of the May 2019 Patch Tuesday, bringing both security and non-security improvements to devices already updated to version 1809.
The update comes with four different known issues, all of them borrowed from the previous patches for Windows 10, but none of them pointing to any installation problems.
But as discussed in this reddit thread, Windows 10 cumulative update KB4494441 installs twice on a number of devices for a reason that’s yet to be determined.
