Hyper-V virtual network switch disconnects host machines network connection

Question

When creating an external virtual switch for my Hyper-V machine, my hosts connection is lost immediately when applying the setting and is restored immediately after deleting the virtual switch.
Am I doing something wrong? It seemed pretty straightforward and I've followed steps that others have outlined to create the virtual switch. 

Answer 1

When I checked, "Allow management operating systems to share this network adapter", and checked "Enable virtual LAN identification for management operating systems" another SNAFU happened. I found in network connections, Ethernet properties,
my "Internet protocol version 4 unchecked, and Hyper-V Extensible virtual switch checked, and I no longer had network access.  Again I had to remove my hyper-v external switch in hyper-v manager.  I guess I could try using my WIFI as the switch,
but getting hyper-v Windows Server 2012 R2 has been a real problem.  
I did the following steps:
To install and configure a virtual machine, complete the following steps:
1. Start Hyper-V Manager by clicking Start, Administrative Tools, Hyper-V Manager.
2. In Hyper-V Manager, right-click the server node in the left pane, point to New, and then select Virtual Machine. This starts the New Virtual Machine Wizard. Click Next.
3. In the Name text box, enter a name for the virtual machine, such as AppServer02.
4. By default, the virtual machine data is stored on the system disk. To select a different location, select the Store The Virtual Machine In A Different Location check box, click Browse,
and then use the Select Folder dialog box to select a save location. Click Next.
5. On the Assign Memory page, specify the amount of memory to allocate to the virtual machine. In most cases, you should reserve at least the minimum amount of memory recommended for the
operating system you plan to install. Click Next. 6.
On the Configure Networking page, use the Connection list to select a network adapter to use. Each new virtual machine includes a network adapter, and you can configure the adapter to use an available virtual network for communicating with other
computers. Click Next. 7.
On the Connect Virtual Hard Disk page, use the options provided to name and create a virtual hard disk for the virtual machine. Each virtual machine requires a virtual hard disk so that you can install an operating system and required applications.
Click Next. 8. On the Installation Options page, select Install An Operating System From A Boot CD/DVD-ROM. If you have physical distribution media, insert the distribution media, and then
specify the CD/DVD drive to use. If you want to install from an .iso image, select Image File, click Browse, and then use the Open dialog box to select the image file to use.
9. Click Next, and then click Finish.
10. In Hyper-V Manager, right-click the name of the virtual machine, and then click Connect.
11. In the Virtual Machine Connection window, click Start. After the virtual machine is initialized, the operating system installation should start automatically. Continue with the operating
system installation as you normally would.
It installed and booted, came up to a blue screen asking me to hit Ctrl-Alt-Del to logon, and when I did, it gave the selection to switch user, task manager, ect...  didn't complete the install could not logon - did not have access to the internet to
logon with my Microsoft Account.