Symptoms
On VMware Fusion 8.5.4 under macOS High Sierra (10.13.6), the network of the guest OS in VMware Fusion occasionally gets disconnected
The guest OS is Windows10, and once the network drops,
- changing to NAT or bridged does not help
- restarting the network in Windows does not help
- disconnecting the network adapter on the VMware side does not help
The solution
The simplest thing is to restart the Mac, but when the same symptom happens over and over while you are working, restarting every time is a hassle
So here is a solution on the command line
On the VMware host side on the Mac,
sudo /Applications/VMware\ Fusion.app/Contents/Library/vmnet-cli --stop
sudo /Applications/VMware\ Fusion.app/Contents/Library/vmnet-cli --startAfter this, restart the network on the guest OS (Windows) side (disable the network adapter, then enable it again)
Points to note
In my environment (macOS High Sierra - Vmware Fusion 8.5.4) I cannot update VMware any further, which is how this symptom came about, but at the moment the latest version of VMware Fusion is 11.5.x, and there is a possibility that the problem has been fixed.
Addendum: the symptom also occurred in an environment with macOS (11.6) Big Sur and VmwareFusion 12.2.0