I have a Surface Pro 2 which I upgraded to Win 10 and then did a clean install because of some problems. Normally it will not connect to my high band. It just says it cannot connect and asks for the password again. Then it still can't connect. A review of the connection log shows that it is having a problem with key exchange. There are some steps which will allow connection for a while but is not permanent. They are: Uninstall the Marvell 350 adapter driver and then let it renew it during bootup. Reset TCP/IP and reboot. It seems to help if the power configuration is set to high performance. Needless to say all of my half dozen network devices have no trouble with it. Does anyone have a similar problem or a solution.