Does kernel mode debugging a VM hosted on ESX work?

I'm trying to attach Windbg in kernel mode to a VM hosted on ESX 5.5.

The target and the debugger are both Windows 7.

I've followed the instructions here: Setting Up Kernel-Mode Debugging of a Virtual Machine Manually - Windows 10 hardware dev

I reboot the VM in debug mode, then start windbg on a separate machine (either a physical machine or another VM on the same ESX) with the following command line:

       windbg -k com:pipe,port=\\myesx\pipe\com_2,Baud=115200,pipe,resets=2,reconnect

After 30s or so, windbg times out with this error:

Kernel debugger failed initialization, Win32 error 0n53

    "The network path was not found."

Debuggee initialization failed, Win32 error 0n53

    "The network path was not found."

I can make this work if the target is hosted in VMware Workstation.

How do I make this work for ESX hosted VMs?