x64 Win10 DbgPrint driving me nuts

[Avalon]

If you have Visual Studio running, it will capture the debug output. Do you see any output in i.e. DbgView?

I assume you've verified the the regkey is:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Debug Print Filter "DEFAULT"WORD 0xF

Now during driver dev I often change the KdFilter away from DEFAULT to avoid spam from Windows and all other drivers. If you have windbg attached to the kernel of the guest in vmware what value does this give:

dd nt!Kd_DEFAULT_Mask