My Satelite C50-B fails to authenticate on my wireless LAN, when running the Windows 8.1 OS with which it shipped. My WLAN runs from a TP-Link 300mbps Wireless N ADSL2+ modem router. This is visible and and the signal strength is reported to be strong. But when I enter the network security key, the message comes back "Can't connect to this network".
To test the hardware, I booted to a USB stick to run Linux Mint 17.1, and there was no problem connecting to my WLAN. So the Toshiba hardware is working correctly, as indeed is my WLAN. There is something in Windows not shaking hands properly.
I am posting here because a similar question posted on the Toshiba Support forum in April yielded no helpful reply.