Please get in the habit of searching the forum before posting. There are literally dozens of posts about this and the solution has been posted about 4 times.
I've tried using Chrome, IE, an Firefox and cannot get them to configure my slingbox 350. For chrome (latest version 47 I think), it says it can't find the singbox (even thought the network light is on and the computer is connected by network cable to the same AT&T Uverse router) and tells me to use IE or Firefox. When I use firefox I download the file extension and then it tells me the file is corrupt and won't install. When i use Edge it's not supported and I don't want to install earlier version of IE.