If you don't have AV, or have AV disabled, or have a non-compliant AV product installed, you will not receive automatic updates for *anything* via Windows Update anymore. Indefinitely. https://doublepulsar.com/important-information-about-microsoft-meltdown-cpu-security-fixes-antivirus-vendors-and-you-a852ba0292ec …pic.twitter.com/TfY0HUEDr7
Absolutely. If you have no AV, you have no registry value that says your PC is ready to receive the January update. And if you haven't received the January update, you won't receive following updates. It's sort of silly logic, but that's how it is.