https://www.bleepingcomputer.com/news/microsoft/windows-10-1903-kb4522355-update-released-with-start-menu-fixes/ > Microsoft has released the KB4522355 cumulative update for Windows 10 1903 (May 2019 Update) that introduces a variety of quality improvements and bug fixes. > In this cumulative update, Microsoft states that they have finally fixed an issue that was causing the Start Menu, Cortana search bar, and tray icons to stop responding or display a critical error. We will have to see if this in fact true after users who are affected install the update.