I decided to ask about this issue, because I found this problem is a common problem for many Drupal designers.
It seems to be a common problem for many drupal designers to face with the Server Error 500 after moving their site to the production server.
There are mainly two lines in the default .htaccess, which are:
# Don't show directory listings for URLs which map to a directory. Options -Indexes # Follow symbolic links in this directory. Options +FollowSymLinks
So, for some hosts these lines should be removed.
What is your solution, after removing these lines from the .htaccess file? How should the directory listing be prevented?