This problem is non-fixable (unless you want to convince all the browser manufacturers to change their products or can get all your users to use only browsers that do pass the path). The problem is that the data you are interested (path name) isn't passed by some browsers. There is nothing you can do server-side that would induce the browser to send the path information. The data you want (path to the file being uploaded) simply isn't being passed and there is nothing you can do about it. I'm sorry but there is nothing you can do to fix this problem.