Windows 7 system can not manually add wireless network

Fault phenomenon: use Windows 7 system, because often mobile office, connected to a lot of wireless networks, and now want to sort it, but found that in the "Manage Wireless Network" can not be manually added, Show access denied, somehow?

Workaround: This should be a broadcast and security type issue. Open the "Network and Sharing Center", click on "Manage Wireless Network" on the left, then click the "Add" button and select "Manual" Create a network profile. In the pop-up window, enter the wireless network information you want to add. Remember to select "Link even if the network is not broadcast", the security type is recommended to use "wpa-personal" (if you select "WPA2-Personal", sometimes there will be no wireless network signal).