FYI for any Googlers out there. I recently bought the wireless dongle for the Xbox One controller (I was using a microUSB cord, but it started to get a bit touchy). It didn't work at first on Windows 7. I got the adapter to be recognized by manually installing a driver, but the controller wasn't recognized. The problem appeared to be that I had Windows Update turned off, therefore didn't get the drivers I needed, even though I downloaded and installed the official drivers individually.
Microsoft was very little help. They don't link directly to driver files anymore, they direct you to their download site (which requires Internet Explorer, ugh) and tell you what to search term to use to find the files. Really Microsoft? A bit rinky-dink isn't it? Also the bulk of their advice was for the Xbox One or Windows 10.