I just managed to boot the same Windows 10 installation both natively and from Arch Linux in a VM.
I'm currently running it natively and just got it activated with my digital license. This is Windows 10 Pro version 1703.
According to an answer here (and also from other sources), I should now expect activation problems when booting it from the VM. I'm worried if this would somehow render my digital license permanently invalid.
So, is there a hard limit on the number of times Windows can be reactivated with the license tied to a Microsoft account?
Update Forgot to mention something of importance: My Windows 10 was first activated with a Windows 7 Pro license from a previous computer. I still have it - the old computer, the license key and probably the documents from the purchase as well. The activation is now tied to my Microsoft account, as said.