In certain scenarios users of Windows 7 and Windows Vista can experience problems when connecting their mobile computers to some Wi-Fi hot spots. According to Microsoft, symptoms will vary, and can include poor performance as well as having the wireless network connection dropped altogether. The Redmond company revealed that these issues are also associated with mobile machines which are running on battery power. The software giant noted that customers running Windows 7or Vista mobile PCs and connecting them to wireless access points (AP) also reported these issues.
“This issue occurs if the Wi-Fi hot spot uses wireless APs or routers that do not support the 802.11 power save protocol,” Microsoft informed. Still, the power saving features built into both Vista and Windows 7 by default, contribute to this problem. Essentially, when a Windows 7 mobile PC is plugged into a power source, the wireless network adapter will go into Maximum Performance mode and switch off 802.11 power save mode. At the same time, for Windows 7 machines running on battery power, the wireless network adapter will go into Medium Power Save mode, which is associated with the 802.11 power save mode. More »