KB4493509

Fixed: Windows 10 update KB4493509 fails with error code 0xc000021a

April 23, 2019 8:06 pm Published by Leave your thoughts

Note to self: Insert long and useless intro paragraph here that makes everyone lose their shit. So I’m using a Windows 10 Professional on a desktop and a few days ago when I turned on my PC I noticed that at first it was trying to apply the updates it had downloaded the night before, but soon after failed to install them for some reason and reverted back to the original state. This went on for a good 15 minutes too. It tried to apply the updates but then failed and the computer would reboot. At first I thought it... View Article