Windows 10 upgrade disabled all network connections

I have just updated a machine from windows 8.1 pro to windows 10 pro.

I have no network connectivity and in the network connections window, nothing appears. There should be a wired and a wireless connection.

In the device manager, these devices show as installed with no issues. I have tried reinstalling the drivers and have the same result.

Am I patient 0 for windows 10?
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Mark GalvinManaging Director / Principal ConsultantCommented:

In the Network and Sharing Center do you see those connections and if so what are they showing as - Public, Work etc.?
bts86Author Commented:
They do not appear there.

ipconfig does not show them either.
Mark GalvinManaging Director / Principal ConsultantCommented:
As per

TCP/IP stack repair options for use with Vista and 7 and 8 and 10
Start - All Programs - Accessories and right click on Command Prompt, select "Run as Administrator" to open a command prompt. [For Windows 8 or 10: <Windows Logo> + x - Command Prompt(Admin)]
Reset WINSOCK entries to installation defaults: netsh winsock reset catalog
Reset IPv4 TCP/IP stack to installation defaults. netsh int ipv4 reset reset.log
Reset IPv6 TCP/IP stack to installation defaults. netsh int ipv6 reset reset.log
Reboot the machine

Hope that helps
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JohnBusiness Consultant (Owner)Commented:
If TCP/IP Reset (as per above) did not work, try removing the network adapters and reinstalling them with newest drivers.

I have Windows 10 running and network connections are fine, so it does work.

Did you not test first?
bts86Author Commented:
I have done the tcpip reset and reinstalled the drivers using the installers from the dell support site. No change.

This is my test John.
JohnBusiness Consultant (Owner)Commented:
Dell machines, especially consumer machines, are often one operating system wonders. It may not be compatible with Windows 10 and you need to ask that question of Dell.

Try also upgrading BIOS and Chipset to see if that helps.
Try temporarily uninstalling your antivirus to see if that is the issue.
Do you happen to have Cisco VPN or another VPN client installed?  I had the same issue... Reverted to 8.1, uninstalled Cisco VPN, upgraded to Windows 10 again, all network devices show up now and are working properly.
bts86Author Commented:
I did have cisco vpn installed. Its too late now though.

I reformatted and did a clean installation and the network devices work properly.

Now I am unable to activate windows but that is another issue.

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