https://www.bleepingcomputer.com/news/microsoft/windows-10-version-1803-cumulative-update-build-17134556-released/ > Microsoft released the January 2019 Patch Tuesday updates to Windows 10 last week and they have now pushed out another cumulative release via Windows Update. It contains a fix for a bug that was preventing some applications from displaying the Help (F1) window correctly. > The new cumulative updates are available for April 2018 Update and Fall Creators Update machines, but there is nothing for those who are on Windows 10 October 2018 Update.