Hi all,
I'm trying to create external virtual switch on newly installed HyperV 2012 R2 server.
I'm using the same NIC with host server, and Allow management OS to share this network adapter is checked. When I click Apply i get following error after 5-10 min of delay:
Adding ports to the switch 'LAN' failed.
The operation failed with error code '-4'.
After that server becomes unavailable for network communication.
Any help on this issue will be appreciated.