I had to install the new type phone adaptor into my hub yesterday then reboot the hub.
All appeared to have gone well, my desktop via Ethernet was fine. Two different tablets and two smartphones reconnected to the wifi network perfectly.
today I have just tried to use our Win 10 laptop and get 'Unidentified network, no internet access' on the taskbar.
Running the troubleshooter for network status throws up the problem as 'WiFi doesn't have a valid IP configuration'.
I have tried a few simple things like rebooting hub and PC, ipconfig/flushdns and reset network adaptors without any joy.
Any suggestions welcome.