Where did you get the utility you are using? Did you say you installed it before you did the free upgrade to Windows 10? I am installing it after the fact, and it doesn't work. I don't often have to...

Reinstalling (repairing or removing) did not help anything for me. And I couldn't find the utility at that address. This address seems to have it: http://www.tp-link.com/common/app/usb/ I even tried...