Warning W521 - Wireless networks with hidden SSID (name) detected.
Warning W521 - Wireless networks with hidden SSID (name) detected.
Fix: The SSID (name) of the wireless network is hidden for security reasons. This means that you need to know the name of the network to connect to it and will not be able to "see it" in the available wireless network list.
Enter the SSID (name) of the wireless network in the profile for the wireless network in order to connect. You will not be able to connect to this wireless network without setting up a profile first with its SSID (name).
For more information, please see the (FAQ).