Microsoft says that Windows devices need to be online for at least eight hours to get the latest updates and have them correctly installed after they're released through Windows Update.
https://www.bleepingcomputer.com/news/microsoft/microsoft-windows-needs-at-least-8-hours-online-to-update-reliably/
Well, this is news... and from reading in the article it would take someone with at least some amount of IT skills to resolve the issue correctly! :groan: