Make VMM support "4k-native" VHDXs. VM creation will fail in VMM if that VM has a 4k-native VHDX. 2012R2 Hyper-v supports 4k native VHDXs just fine. But VMM fails on it.
Before you say "use VHDX format, VMM supports it", please re-read carefully and check - the default vhdX is 512e; VHDX is 4k native only when you explicitly set logical sector size as 4k during its creation. And if you use 4k native VHDX - VMM fails on it (though works fine with 512e VHDX)
Tested on VMM 2012 R2 UR10 and Windows 2012 R2 File Server Storage Pools: a) Physicalsectorsize:4096 / logicalsectorsize:4096 and b) Physicalsectorsize:4096 / logicalsectorsize:512

Why this is a problem:
Newest HDD's that are currently supplied by HW vendors are no longer 512e they are truly "4k-native"; so the Storage Pools have to be are 4k-native.
Sure a lot of supply is stocked in 512e disks… but at least for all new deployments the disks are 4k native. We already had um… 10 years for 512e transitioning period?…..
Let's make VMM support 4k till it's too late?