Root Faild Code : 0x174B87

Hello , I have tried to root my device Samsung galaxy s4 at&t mobile many time and the result ends with fail I tried to root it with pc and without pc but it tells me that there is a problem , I searched about that problem many time but I had the same result of each try , my device model
I9505xxUFNB8 ( my base model)
And thanks :) I hope u help me and help every one who may read this thrid