I have a server running 2 VMs each one is connected to a different NIC with different IPs through external virtual switch from Hyper-V configuration.
The issue that happened is that I lost the connection to one of the VMs from RDP, when I checked the server the VM is running normally and the other VM wasn't affected. I tried to ping the VM from the server but it didn't work. The only solution I reached was to restart the host server.
I have been working on this system for a year now and I didn't have this issue before but now it is happening frequently.