How to Resolve “CORS no allow credentials” in Apache

It seems like you’re encountering an issue with Cross-Origin Resource Sharing (CORS) when using Apache. CORS is a security feature that allows or restricts resources on a web page to be requested from another domain outside the domain from which the first resource was served.

Problem

If you’re seeing an error related to “no allow credentials” in a CORS context, it typically means there’s a misconfiguration in your server settings regarding how it handles cross-origin requests. Specifically, the error might be related to the Access-Control-Allow-Credentials header in your Apache configuration.

Solution

To address this issue, you can modify your Apache configuration to correctly handle CORS requests. Here’s a basic guide on how to do it:

1. Enable Headers Module: Make sure that the Apache headers module is enabled. You can do this by running a2enmod headers command if you’re on a Debian-based system.

   sudo a2enmod headers 
   

2. Configure .htaccess or Apache Config File: You need to add specific directives to your .htaccess file or directly into your Apache configuration file. Here’s an example of what you might add:

   
   <IfModule mod_headers.c>
       # Enable CORS for a specific domain and allow credentials
       Header set Access-Control-Allow-Origin "http://example.com"
       Header set Access-Control-Allow-Credentials true
   
       # Additional CORS headers
       Header set Access-Control-Allow-Methods "POST, GET, OPTIONS"
       Header set Access-Control-Allow-Headers "Content-Type, Authorization"
   </IfModule>
   
   

   Replace “http://example.com” with the domain you want to allow. If you want to allow all domains, use “*“ but be cautious as this is less secure.

3. Restart Apache: After making changes to your Apache configuration, you need to restart the server for the changes to take effect. This can usually be done with a command like sudo systemctl restart apache2 on Linux.

   sudo systemctl restart apache2 
   

4. Check the Configuration: After restarting, test your setup to ensure CORS requests are being handled correctly.

Remember, CORS is a browser-enforced security feature, so these changes impact how browsers handle cross-origin requests to your server. Always consider the security implications, especially if you’re allowing credentials (Access-Control-Allow-Credentials true), as this can expose your site to certain types of cross-origin attacks if not configured properly.