Solved! Go to Solution.
So what about when all of the above has been satisfied (Spatial Analyst extension has been installed, successfully authorized, and is checked in ArcMap) and you still get the error message? Then what? Any idea what I'm missing?
Thanks a lot man. it worked
see this video may help u in your problem
Error: Unable to execute the selected tool. You do not have the necessary license - YouTube
thx for reminding... I appriciate it...