KB4524147 originally caused a critical error when using Start Menu AND it prevented my printer from printing. The latter was because of some mess up with the print spooler. I uninstalled KB4524147 and BOTH problems disappeared.
This morning, I updated with KB4517389. The printer seems to work, BUT I receive a critical error when using the Start Menu.
I suppose I need to uninstall KB4517389?
***Original title: KB 4517389 causes Critical Error when using Start Menu***