Looks like a problem with Hyper-V. You may want to try the following (in order):*
- Open Hyper-V Manager, delete all virtual switches via the Virtual Switch Manager, delete all VMs, and reboot. Now, try to restart the emulator.
- If that also fails, attempt to upgrade your drivers for the adapter connecting you to the internet (I'm guessing it's a WiFi adapter?). Go to Control Panel > Device Manager and under "Network Adapters" find your WiFi/internet adapter, right click, and uninstall. When done, right click on Network adapters and scan for hardware changes. This will reinstall your adapter. Reboot, then try to start the emulator again.
- If that still fails, the last course of action is to run a "repair" on Windows. If there truly is a problem between Hyper-V and your network adapters, this may resolve the issue
*note that #2 was the solution that worked for kr85