Microsoft account - Devices not in sync with actual devices

When going into my Microsoft account, then under 'Devices', there are 4 devices linked.
The number of devices is correct, but that's it.
All other data is incorrect, or outdated.

I have 2 'real' PC's and 2 VM's using 1 single retail Windows 10 Pro and 3 upgrades from 7/8->10
However, 'devices' show 1 'real' PC (nót the one with the retail W10 version, but the one running on an upgrade) and 3 VM's.

I assume it isn't but if at all possible..., how do I get that in sync with what I am actually using.

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I am pretty sure that you can simply remove the devices from your account and then the next time you use your Microsoft login on those devices they will re-register with your account.

Thanks, I will give that a try.