Hi,
Thank you for writing to Microsoft Community Forums.
As per the issue description, I see that you have installed 2 multi-boot utilities, i.e., Boot Camp and VMware Fusion on your Mac.
If you have installed Windows 10 on your Boot Camp and activated it, then you cannot activate Windows 10 on VMware Fusion using the same license key, which you used for Boot Camp. You need to have different Windows 10 licenses for Boot Camp and VMware Fusion.
If you want to install Windows 10 on both Boot Camp and VMware Fusion, then you need to have 2 different licenses.
Hope it helps.
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