I managed to do it finally yesterday. I tried the 5 GHz connection first, but Netduino seems to connect only to 2.4 GHz. There were lots of other problems, too, and I'm not sure if I fixed them correctly or was it just luck. For instance, I tested the WebRequest sample on a php page I've written for my project. First it didn't read anything, although I could perfectly well read the page with a browser. Then I added the [!DOCTYPE HTML] , which I had left out and got it working. Replace [ with <. Couldn't write < without having the text disappear.