No network connection after upgrading to Windows 10
I had the same problem, do you have VPN software installed? I had an old Cisco VPN installation and I couldn't remove it under windows 10. To fix I had to revert the upgrade and uninstall the VPN then upgrade again. My revert only took a couple minutes, it's usually very fast.
Open start menu and search for "windows 8" you will see a settings option to "Go back to Windows 8.1"
Uninstall VPN
Upgrade again
I had the same problem with network connections not showing up after the upgrade. The issue is with Cisco VPN software client. uninstalling it in windows 10 won't fix the issue. The solution here is to do the following: Revert back to windows 8.1 (recovery options > revert to windows 8.1), next After restore of windows 8.1, go to programs and features > uninstall the cisco VPN client or cisco anyconnect software client, next upgrade your instance of windows to version 10.
This worked and fixed the issue. There weren't any other complications in upgrading from windows 8.1 to windows 10 on my laptop - lenovo thinkpad yoga 12 [2014] with intel dual band 7260ac wireless adapter.
I do not have the points to comment so i have answered instead.
I had the same trouble and for me @TechnoCore answer worked like a charm!
But later when Windows 10 was up and running with wifi connected correctly I needed to install Cisco VPN Client (version 5.0.07.0440).
Cisco VPN Client did not install.
I lost some hours finding a solution but i found the answer there.
Resolving issues with Cisco VPN 5.0.07.0440 on Windows 10 Release
In a nutshell, you need to perform the following:
- Completely remove the Cisco VPN client and any other VPN clients you may have installed while struggling with this.
- Completely remove Citrix DNE update.
- Install SonicWall VPN found here.
- Install Cisco VPN 5.0.07.0440 found here. You will need to extract the .exe to a folder, then run the .MSI installer found inside the archive.
- Apply the following Windows registry fix if you receive the error for enabling the adapter:
- Edit: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CVirtA\DisplayName
- Replace value: @oem8.inf,%CVirtA_Desc%Cisco Systems VPN Adapter for 64-bit Windows
- With: Cisco Systems VPN Adapter for 64-bit Windows
- Re-import your .pcf
Hope it helps