Windows 8 not showing 5GHz networks
Windows 8 currently doesn't pick up my 5GHz network or any 5GHz network for that matter. I had Windows 7 before which picked up all 5GHz networks with no problems. I am able to connect and see all the 2.4GHz networks in my vicinity without an issue.
I have a Cisco WMP600N which is compatible with Windows 8 and have tried suggestions by others but nothing has worked.
How can I connect to my 5GHz network again in Windows 8?
I had the same problem connecting to the 5Ghz band with a Linksys WMP600N PCI card to a Linksys E4200 running DD-WRT build 19342 under Windows 8 Professional (RTM). The problem is definitely the driver that is included in Windows 8 as the same hardware had no problems under Windows 7. I was able to solve it by manually installing the Windows 7 (!) driver from the Linksys (Cisco) support website: Windows 7 Driver 04/30/2012 Ver.3.2.7 To do this:
- Unpack the downloaded driver to your computer
- In desktop mode, right click the wifi icon in the right lower corner and select "Open network and sharing center"
- Click "Change adapter settings"
- Right click you wifi adapter and select "Properties"
- Click "Configure"
- Go to the "driver"-tab
- Click "Update driver"
- Click "Browse my computer for driver software"
- Click "Let me pick from a list of device drivers on my computer"
- Click "Have disk"
- Browse to the location where you unpacked the downloaded Linksys driver
- Select your network adapter and click "Next" to install the driver
- Close all windows Check if you see your 5Ghz band
Taken from Technet Answers