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Windows 8 may not be able to connect to some Cisco routers
Windows 8 clients may not be able to connect to existing wireless infrastructures using some Cisco routers, while Windows 7 and XP machines do.
Set up a wireless router - Microsoft Windows Help
Follow these four steps to set up your wireless router and create a wireless network.
What you need to set up a home network - Microsoft Windows Help
Learn about the different network technologies and what hardware and devices you need to set up a home or small office network.
Why can’t I connect to a network? - Microsoft Windows Help
Learn how to solve some common problems with connecting to a network, including problems with network adapters, airplane mode, cables, security keys, updates, drivers, and more.
Wired and wireless network connection problems in Windows - Microsoft Windows Help
Troubleshoot wireless (Wi-Fi) and wired (Ethernet/LAN) network connection problems and Internet connectivity issues in Windows 8, Windows RT, Windows 7, Windows Vista, or Windows XP.