Server loses internet connection after creating virtual switch in hyper-v

On a fresh Server 2012R2 Essentials install, I set up Hyper-v and created an external virtual switch. Connection to the vm is good but Health Report no shows loss of internet connectivity and that the router is incorrectly setup. 
However, I still have a working internet connection? I worry that the server may not update or allow Anywhere Access at some time. Any suggestions? Thanks

If Hyper-V virtual switch behaves strange and server is destined for testing, then it's correct and I recomend delete this virtual switch and create it again.
Here is some issues with internet connection and Hyper-V switch, none of them does not match your problem, but can be inspirative for troubleshooting:
Windows 8 Hyper-V - how to give VM internet access?
Hyper-V kills internet connection when bridging
Configuring Hyper-V for multiple subnets with only one NIC (Server 2008 R2 Edition)
How does basic networking work in Hyper-V?
Best Regards,
thennet

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