https://www.techradar.com/news/is-microsoft-forcing-the-windows-10-april-2018-update-on-pcs-that-have-blocked-updates > It looks like Microsoft is automatically downloading the Windows 10 April 2018 Update on PCs, even if users have blocked Windows from downloading updates until later in the year. > Owners of Windows 10 Pro, who have selected the Semi-annual channel to determine the frequency of updates, have done so to ensure that when a major update for Windows 10 does get released, it isn’t installed right away. Instead, the update is delayed – or blocked – for a number of months until all the issues and bugs have been ironed out.