Techdows published a story that the October Cumulative Update for Windows 10 2004 (KB4579311) is causing issues on some installations.

KB4579311 is failing to install for Many, causing Black Screen, Login & Print issue, and more

The recently released October Cumulative Update for Windows 10 2004 (KB4579311) as Part of Patch Tuesday is failing to install consistently and more issues reported by users who installed it. There are several reports on the Answers forum and Feedback Hub about the issues.

KB4579311 is failing to install for Many, causing Black Screen, Login & Print issue, and more