I recently unpacked a Fuji Xerox Docuprint CP215 Series Network Colour Printer and tried to set it up on my home network. The printer recognised my network and reported the signal strength to be strong. However, when I entered the network security key, the message came back "Unable to connect to this network".
Coincidently, something very similar happened when I unpacked a Toshiba Satelite C50-B notebook computer and tried to use that on my WLAN. I have made a post on that topic here.
My WLAN runs from a TP-Link 300mbps Wireless N ADSL2+ modem router.
Is there a known problem with TP-Link modem routers, or am I doing something wrong?