Solution about website Error with all customers on ispconfig-Server who are using php. the website gives following error message: Warning: Unknown: open_basedir restriction in effect. File(/var/www/web1/web/index.htm) is not within the allowed path(s): (/var/www/web1/) in Unknown on line 0 Warning: Unknown: failed to open stream: Operation not permitted in Unknown on line 0 Fatal error: Unknown: Failed opening required '/var/www/web1/web/index.htm' (include_path='.:/usr/share/php:/usr/share/pear') in Unknown on line 0 Solution: edit file: /etc/apache2/vhosts/Vhosts_ispconfig.conf the trailing "/" in the lines php_admin_value open_basedir /var/www/web1/ should be changed to: php_admin_value open_basedir /var/www/web1 without trailing "/" in the lines don´t miss to change the rest of the php_admin_value open_basedir´s values background: http://forum.ubuntuusers.de/topic/bug-in-apache2-update/ => The ispconfig2 Programm has to be changed accordingly ANY menü entry will result in the same problem again used version: ISPConfig-2.2.35 regards holzbalken