When I first updated my desktop to Win 7 from Vista I had a Wifi adapter for which no Win 7 driver was available. Before I replaced the WiFi adapter with one that had a compatible driver, the Reader software would not work. It kept crashing my PC. Afterward correcting the WiFi adapter/driver problem the Reader software works, but it is still flaky on occasion. At any rate, Win 7 seems to have major issues with networking, so make sure you have the latest drivers for your PC's WiFi adapter and/or Ethernet adapter.