Can I use Windows 10 with 2 different hardware IDs (bare-metal and VM) at the same time without having any licensing problems? I had Windows 8 on my Mac on their own partition and it was working great. The problem was when I wanted to boot into windows in a VM from within OSX. Windows wanted me to activate my installation. I used the Microsoft Toolkit to activate it (even though I had a legit license). When I boot back to Windows (not in a VM) Windows were prompting me to activate it again (I used Microsoft Toolkit once again).