I have a windows desktop application whose application data is stored in the All Users/Application Data/ My Company folder. Now when I install my application on an Windows XP machine using an Administrator login. If I run my application using that administrator's login it works well but when I tried to run my application using a normal users login on that machine it fails. The reason for failure is that the normal user is not able to write anything in the All Users/Application data/ My Company folder. Now is any kind of permission is required for All Users folder on Windows XP machine. If yes then from where I can set that permission.