Hyper V: Unable to connect to VPN

First a bit of history:

• This is a work VM that was migrated to a VM using P2V. The VM is on my personal PC and not a server
• When the VM was migrated everything was great except that Windows needed activated. At this point I was just using the default switch with Hyper-V
• Removed from the domain as the suggestion of MS to downgrade the license from Enterprise to Pro. Didn't work
• VPN stopped working when removed from the domain.
• Eventually re-joined the domain but I was unable to use the default switch for the VPN. Internet worked but VPN did not.
• Using an external virtual switch bridged to my WiFi adapter allowed me to access the internet and use the VPN.
• This setup would eventually fail meaning that internet connection failed for both the host and VM. At this point I would delete the virtual switch and create it again and then internet/VPN would work again. This continued for a couple of months.
• Today, these steps no longer work. Instead I get an error "Failed while adding virtual Ethernet switch connections. Ethernet port '{GUID}' bind failed: Element not found. (0x80070490)
• The WiFi adapter shows as bridged in the adapter settings.
• I need to disable/enable the WiFi adapter and then remove from the bridge.
• I can create an external virtual switch on the ethernet port without issues. I cannot use this because I do not have an ethernet cable long enough (it is about 60').

Ideally I would like to get the default switch to work again but even getting the external switch working again would be great. It may not make sense but I feel like I have hit a max number of connection numbers (you know, the thing that shows "Local Connection 2" or w/e the number is). Since this stopped suddenly without a restart or update (that I know of) I can't think of much else besides the fact that I hit the some max number - after all who is going to have 100 different connections?

I also wonder if the NAT settings are incorrect on the Default Switch in Hyper-V and that is why it is not working. While researching this issue I found these instructions for creating a NAT but when I run Get-NetNat there are no results. As I mention below, I am not familiar enough with networking to know if this is a problem and if it is, what should be done to restore the NAT to the correct settings for the Default Switch.

I have tried:

• Updating the drivers
• Removing the drivers with netcfg
• Reinstalling Hyper-V

I am a developer and familiar with windows but I lack experience in the networking area of computers.