gHacks published a story that Microsoft has re-released update KB4023057 to enforce upgrades for older versions of Windows 10.

Microsoft pushes out KB4023057 again to enforce Windows 10 upgrades

Windows 10 users who run consumer versions of the operating system and want to stay on a particular version of Windows 10 that is not the recent version, may want to avoid the recently re-released update KB4023057.

Microsoft pushes out KB4023057 again to enforce Windows 10 upgrades - gHacks Tech News