What me worry? My system received v1809 on May 15, 2019 nearly one year after receiving v1803 on may 18, 2018. That was bld. 17763.503. Since 05/16/19, WU has auto checked every day and has not downloaded any updates, not even KB4497934. After several years trying to understand how WU functions, I have given up trying. I'm just doing monthly system images with father/son drives and letting the updates fall where they may (or may not).