Hi I usually change file and directory permissions from file manager in Cpanel and sometimes by Cuteftp But this time the host is Windows server 2008. with no Cpanel I tried changing file permissions for php files (that were causing 500 internal server error) but they didn't change I connected to the server by remote desktop (it was my first time) and clicked properties for one of php files. In security tab, there seems to be some useful options. I took a snapshot and you see it below The system is showing 4 group of users: SYSTEM IME_ADMIN Administrators Users and you see the permission checkboxes too. How I should act to set permission 644 for php files and 755 for folders? thanks for your assistance