**********SOLUTION!!!!********** I just installed Windows 10 this week, and realized last night that my wireless adapter was only able to see 2.4GHz access points. Since I have a 802.11n router with true dual band, and it was working fine before upgrading to Win 10 (and my other devices are fine), I had a feeling it was a driver issue.

Sure enough, Windows 10 applies it's own generic driver for the Wireless Adapter. What's worse, if you try to manually install the Windows 8 driver for your TP-Link TL-WDN4200, you receive an error stating that the driver is not correctly digitally signed: 'Windows found driver software for your device but encoutered an error while attempting to install it. The hash for the file is not present in the specified catalog file. The file is likely corrupt or the victim of tampering.' Solution: Look at this page, follow Option 2.

3.8 (75%) 8 votes TP-Link TL-WN727N Driver Download for Windows XP Seven 7 Windows 8 and Windows 10 with complete Guide. Cisco Vt Camera Ii Driver Windows 10. Another bright prospect by the TP-Link.

Windows 10 Setup Media Driver Missing. Sound Blaster X Fi Surround 5.1 Pro Driver Windows 10. Disabling the device driver signing from the menus allowed me to then force the install the driver manually. I still received a prompt alerting me that the driver might not be valid, but allowed me the option to continue.

As soon as it was done, my 5GHz networks were again visible to my adapter, and was able to connect without issue. Here's the link to installing a driver manually if you don't already know how to do that: In Step 7, the correct device was already selected, so I didn't have to browse for the device. Hope this helps people out there!