Microsoft confirms the process to create new Network Adapters joined to a VM network on Hyper-V hosts in Windows Server is broken since the last Patch Tuesday. Temporary mitigation has been issued.

Hello,<BR><BR>Does anyone know if it's possible when setting up a Hyper-V virtual network to have a virtual machine connect to the external network and NOT have it see other VMs on the same host?

Various users have complained that they cannot launch a Virtual Machine created in Hyper-V Virtual Manager as the Ethernet port failed to allocate resources while connecting to the virtual switch.