I am sorry for the issue you are experiencing.
Let me ask you, does this happen when you use Intel® Proset Software as well as Windows* Wireless Auto Configuration?
Yes, I uninstalled the Proset Software, no difference.
Let us check about this issue.
Thank you Joe. Maybe I should clarify that when I say the adapter does not connect on the 5GHz band it actually establishes a "limited" connection. It is unable to get an IP-address from the AP and of course it fails the Ping test if you run the diagnostics of the Proset software. I have not tested yet whether it would connect if I gave it a fixed IP address.
Also, as soon as I uninstall the VPN client software everything gets back to normal.
I have sent you a private message several days ago. We have a new wireless driver available: Intel� PROSet/Wireless Software; Intel� PROSet/ Wireless Software Downloads
If the issue is still present we would like to obtain more information about your setup, such as:
- Wireless driver version:
- Access point model and firmware:
- Authentication/Encryption type:
- Optional SIU code/report: http://www.intel.com/support/siu.htm