A 403 Forbidden error means your server is blocking access to the mp_connector. This is most commonly caused by restrictive Apache configuration, either in the .htaccess file or directory settings.
Below are the most common causes and how to resolve them.
Problem 1: Web Server Security Rules (Apache / Nginx)
Some hosting providers block execution of unknown or custom scripts for security reasons. In this case, the web server configuration denies access to PHP or executable files that are not explicitly allowed.
To allow the connector to work, you must add an exception for the connector file.
Apache Web Server
You may find a .htaccess file in the root directory of your shop.
Step 1 - Open .htaccess
Open the file using any text editor.
Step 2 - Find blocking rule
Look for something similar to:
<FilesMatch ‘.(py|exe|php|PHP|Php|PHp|pHp|pHP|pHP7|PHP7|phP|PhP|php5|suspected)$’>
Order allow,deny
Deny from all
This rule blocks execution of PHP files.
Step 3 - Exclude connector.php
Modify the rule to exclude the connector file by adding a negative exception:
<FilesMatch ‘^(?!connector.php$).*.(py|exe|php|PHP|Php|PHp|pHp|pHP|pHP7|PHP7|phP|PhP|php5|suspected)$’>
Order allow,deny
Deny from all
This keeps server protection enabled while allowing the connector to run.
Nginx Web Server
Locate your Nginx site configuration file. Depending on your hosting environment, it may be located in:
/etc/nginx/sites-enabled/
or inside your project/server root directory (Docker or managed hosting setups).
Step 1 - Find blocking rule
Look for rules similar to:
location ~ .php$ {
deny all;
}or:
location ~* .(php|exe|py)$ {
deny all;
}
These rules prevent the execution of PHP scripts.
Step 2 - Add connector exception
Add a more specific rule above the blocking rule:
location = /mp_connector/connector.php {
include fastcgi_params;
fastcgi_pass unix:/run/php/php-fpm.sock;
}Note: the fastcgi_pass . The value may differ depending on server configuration.
Step 3 - Reload Nginx
After saving changes, reload Nginx:
sudo systemctl reload nginx
Problem 2: Firewall Restrictions
A 403 error may also be caused by a firewall or security system blocking access to the connector.
This may include:
Hosting firewall
ModSecurity
Cloudflare or similar protection
Server security plugins
How to check?
Temporarily disable the firewall (if you manage the server).
Try accessing the connector again.
If it works, whitelist the connector path:
mp_connector/connector.php
or allow your integration IP address.
Problem 3: File Permissions
Incorrect file permissions can also result in a 403 error. Ensure the connector file exists and has readable permissions:
mp_connector/connector.php
Recommended permissions:
Files: 644
Folders: 755
On managed hosting platforms, make sure the web server user has permission to read the file.
👉 For other connector errors, see: Fixing Common Connector Setup Errors
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