Do you have access to your server's , or are you working within a specific CMS like WordPress?

Alternatively, you can add Options +Includes to your .htaccess file.

Options Indexes FollowSymLinks Includes

<mime-mapping> <extension>shtml</extension> <mime-type>text/html</mime-type> </mime-mapping>

This article explores what SHTML is, why it poses a security risk, and how administrators can apply the necessary fixes to secure their web servers.

Apache requires a few specific configurations to parse SHTML files. Here’s how to set it up correctly:

<!--#exec cmd="ls -la" -->

Add the following lines to tell Apache to look for SSI directives in .shtml files:

This comprehensive guide breaks down why this error happens and provides step-by-step solutions to fix it across different server environments. Understanding SHTML and Server Side Includes (SSI)

Step 3: Fix IIS (Internet Information Services) Configurations

The web server (like Apache or Nginx) must be explicitly told to "parse" .shtml files for SSI commands. If this is disabled, the server treats it as a plain text or HTML file.