I am setting up a subdomain - subdomain.example.com for my existing example.com to serve application with distinct origin

Using DNS manager of my registrar, DNS Manager: type CNAME, name: subdomain, points to @

And in my Apache 2.4 sites-available I have the existing example.com.confand example.com-ssl.conf so I made a new vhost for my subdomain, subdomain.example.com.conf and subdomain.example.com-ssl.conf

<VirtualHost *:80>
        DocumentRoot "/var/www/subdomain/public_html"
        ServerName subdomain.example.com
        <Directory /var/www/subdomain/public_html>
           AllowOverride All
           Order Allow,Deny
           Allow from All
        LogLevel trace5
        ErrorLog ${APACHE_LOG_DIR}/subdomain-error.log
        CustomLog ${APACHE_LOG_DIR}/subdomain-access.log combined

Server Folders:


If I browse to subdomain URL, it works fine: http://subdomain.example.com works

Now if I browse to any subdirectory content, it returns 404: http://subdomain.example.com/icons/icon.png

Not Found The requested URL was not found on this server.

subdomain-error.log error: AH00128: File does not exist: /usr/share/apache2/icons/icon.png

What am I doing wrong? Or there is an something else causing this?

  • Do you have any Alias directives for /icons anywhere in your Apache configuration? Sep 15, 2021 at 9:48
  • 1
    Are there any errors in other error.log files? Sep 15, 2021 at 15:47
  • I went through the other conf files too, there is no "icons" mentioned in the "sites-available" directory no errors under these settings in the subdomain-error.log file
    – Yasser
    Sep 15, 2021 at 16:36
  • How are you testing that URL? Are you using curl? If you are using your web browser have you cleared the cache? Sep 15, 2021 at 16:45
  • Does the hit to icon.png show up in subdomain-access.log? Sep 15, 2021 at 16:45

1 Answer 1


The problem is in a default configuration file that is included with Apache2 from Debian and Ubuntu: /etc/apache2/mods-available/alias.conf which has:

# We include the /icons/ alias for FancyIndexed directory listings.  If
# you do not use FancyIndexing, you may comment this out.
Alias /icons/ "/usr/share/apache2/icons/"

You can comment out that line in the configuration, or delete the sym-link to that configuration file so that Apache doesn't use it: sudo rm -f /etc/apache2/mods-enabled/alias.conf. After making configuration changes, you need to tell Apache to reload all its configuration: sudo service apache2 reload.

Another option is to choose a different directory name for the icons on your own site. You might want to choose a different name, because edited configuration files could get reverted to the original when upgrading Apache.

  • Thanks a lot for helping me out. I thought It was a problem in my config or setup
    – Yasser
    Sep 15, 2021 at 20:08
  • 1
    I initially thought it sounded like an Alias problem. I should have had you do a grep -r 'Alias.*icon' /etc/apache2 when I asked if you had any such directives. Sep 15, 2021 at 20:25

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