ios failing to build

i keep getting this when i try to build ios on windows:

Error building Player: IOException: Failed to Copy File / Directory from ‘Temp/StagingArea\Trampoline’ to ‘C:/Users/Me/Desktop/MyName/Coding projects/My first unity game’.

Hi, I know that this is an old post, however I have the same problem on Unity 2017.4. it seem that the folder where you build to is looked to another process that will not release it, so you cannot even delete the folder . my solution now is to restart the computer. I hope that I can find a better solution.