The most likely cause for the vTiger error “Sorry! Attempt to access restricted file.” is the $root_directory value in the ‘config.inc.php’ is incorrect or misspelled.
In order to correct it follow the steps below:
- Go to your vTigerCRM directory
- Open “config.inc.php” with your favorite text editor
- Go to line 86 and adjust $root_directory value to correct vTiger directory. Note, that the directory must end with /. It should look something like this – $root_directory = ‘/var/www/vtigercrm/’;
Hope that helps!