I'm running a couple of Windows 10 guests on Workstation 11, which is running on Windows Server 2012 R2 Essentials (the host). The VM's have bridged network connections. I do not have "Replicate physical network connection state" checked.
The guests work fine until suddenly, they report "no Internet connection." When this happens, the host's network connection is fine (from the host I can open a browser and get to any site, no problem). A short term fix (until it happens again, which can be anywhere from 3 to 20 minutes), is to VM > Removable Devices > Network Adapter > Disconnect and then VM > Removable Devices > Network Adapter > Connect. After doing this, everything is fine for a short while, then the connection is dropped again.
I shut down the VMs, and restored the Network Settings to their default values (I never changed them after installing Workstation) hoping that would resolve the problem, but it hasn't made any difference at all.
The problem occurs in both VMs, but not necessarily at the same time. One VM can have a working bridged connection and the other reports no connection, or both have no connection.
Any ideas what is causing this problem?