Invoke-VMScript is not working

Hi all,

Environment:

     vSphere Client Version 6.5.0.13000

     Windows 10 64-bit 1703 Virtual Machines

     4 ESXi Host(s):

          3 are 5.5.0, 6480324,

          1 is 5.5.0, 7967571

Problem:

I am trying to use Invoke-VMScript off a a Windows Server 2012 R2 Monitoring Server to send a script to various VMs. I am getting an error message:

I have opened up port 902 on all of the Virtual Machines but I am still receiving this message and I am not sure what is wrong now as the account I am using has Administrative access to do anything on the VMs, as well as the correct rights in vSphere.