when i am trying to fire requests concurrently i am getting the below error ? is it jmeter client error or server error ? Please let me know the solution

Hello Abhishek,

i have sent a skype request please could you accept it ( from Rahul )

Is the test running fine with two or three requests?

Yes

Are you using windows?

If yes, then windows is blocking connections.

Windows. What is the other option

Try generating a lesser load