How to fix Windows 10 doesn't see addition cpu cores after editing VM settings with more cores

[mhweb]

I created a Windows 10 vm with 4 cores, then I realized I needed more cores, so edited the vm and selected 8 cores. However, Windows 10 still sees 4 cores, why?

[mhweb]

Got, after several reboots, the cores are now appearing on Windows 10.

Thanks,