I'm connecting my Arduino Yún to my laptop via USB cable and as I read in Arduino documentation:
When you first power on the Yún, it will create a WiFi network called ArduinoYun-XXXXXXXXXXXX. Connect your computer to this network.
But in my case nothing appears and I didn't found anything related to this on the web.
I'm running Windows 8.1 on my laptop.
Any idea how I can solve this problem?
It sounds as if something is wrong with the wifi configuration on the Yún. Has it previously been configured? Try resetting the wifi by pressing the "Wifi RST" button for more than five seconds (but less than 30).
More info here.
The question you asked is already answered by @mellbratt. You have successfully configured Yun and connected it to the network (configuration of WiFi by providing SSID and security key in web panel). The thing you have to do now, is to find what IP your Yun device is assigned on that network. You can use tools like Angry IP Scanner to scan the network and find your IP if you cannot access it from myusername.local. Using that IP you can access the web panel.
