Ever since I upgraded my Surface to 10074 build I haven’t been able to VPN into my work network. Neither Cisco AnyConnect Security Mobile Client nor Cisco VPN Client worked. While I am still unable to get Cisco VPN Client installed, always prompted with an error 27850 (unable to manage network component), I was able to fix the connection issue on Cisco AnyConnect the other day.
The problem was that every time when I tried to connect via Cisco AnyConnect Client it kept looping through the connection and never made it connect.
The fix is quite simple actually, go to Network Connections from Control Panel, right-click Cisco AnyConnect Security Mobility Client Connection, and choose Properties.
Then disable IPv6, change IPv4 IP settings from Fixed IP to Dynamic.
Close all Network Properties dialog boxes, and try VPN connecting again. It should go through fine now.
Now, I am hoping the next Windows 10 build will fix Cisco VPN Client issue.