From the Microsoft VM can you ping another VM? This is for test the correctly functionality of Network Adaper on the VM.
I try to simulate in my lab your issue and I'll try to give you a answer (VMware side)...I must have some specifics:
ESXi Version?
NIC --> vmxnet3
How many NIC on the ESXi Node?
Microsoft OS?
NLB is the feature of Network Load Balancing on Microsoft ..is correct?
Thank you