rooting galaxy s4 GT-I9505 with android 4.4.2 kitkat I tried to root phone according to instruction. 

And it was ok. It seemed that my phone successfully rooted. 

But when I run root checker it showed that I don't have root access.
Easy way: Wipe your phone and try again from fresh stock.


but only do this if in [adb shell] you can execute "su" successfully.