DNS failed error in WiFi network

When I am accessing wifi network I get dns failed error message. what is the problem? pls help


Can you connect using a wired connection?
Get a command prompt and enter
ipconfig /all >myTCP.txt
then open that file, copy the contents and paste into your follow-up
Can you manage my system by teamviewer pls help me..I am facing to wifi network access.it is connect but I can`t access it.