KZ
https://support.microsoft.com/en-us/topic/march-15-2021-kb5001567-os-builds-19041-868-and-19042-868-out-of-band-6e0844a2-7551-4b2d-9c4b-4274a5949bf3
"Updates an issue that might cause a blue screen when you attempt to print to certain printers using some apps."