How to Fix “Ninja Forms Stuck on Processing and Will Not Submit”

This troubleshooting guide shows you how to fix the “ninja forms stuck on processing” error which stops your forms from submitting.

This error usually happens when your host, CDN, or security plugin blocks access to admin-ajax.php for non-admin users.

As a result, only admin users can submit your Ninja Forms. When a guest tries to submit the form, it will load forever instead of submitting it.

How to check if the admin-ajax.php file is blocked for guests.

Open a new private browser window then visit yourwebsite.com/wp-admin/admin-ajax.php.

If you see a Forbidden error, this file is blocked.

ninja forms stuck on processing admin ajax blocked

This is why your Ninja Forms is Stuck on Processing

Ninja Forms uses the admin-ajax.php file to process form submissions without reloading the page. This process is known as Ajax. In WordPress, ajax requests are treated as if someone is trying to access your wp-admin dashboard.

As a result, by blocking the access to wp-admin you’re also essentially blocking Ajax requests on your site. And since Ninja Forms uses Ajax to process submissions, the forms will load (process) forever and will not submit.

WPEngine is one host that sometimes blocks access to admin-ajax.php. If you use it as your web host, try contacting them and asking them to whitelist the file.

If you are using a security plugin, you might want to get in touch with its developer for information on how to whitelist access to the admin-ajax.php file.

In the case of Wordfence

  • First, log in to your WordPress admin dashboard then go to “Wordfence > Firewall” and click on the large button that says “Manage Firewall”.
  • Next, scroll to the “Whitelist URLs” section and whitelist “/wp-admin/admin-ajax.php” as shown.
wordfence whitelist admin-ajax.php

NOTE:

Check to ensure that you have not installed any plugin that disables access to /wp-admin/ for non-admin users.

If you have, contact the developer and check if there is a way to whitelist the “/wp-admin/admin-ajax.php” file.

Learn how to create newsletter subscription forms using Ninja Forms.

FAQ

Here are some of the answers to our frequently asked questions

Noptin is an email marketing automation plugin for WordPress.

It’s lightweight, fast, and easy to use, making it a great solution for bloggers, small businesses, and e-commerce websites.

No coding skills required! Noptin’s drag-and-drop editor makes it easy for anyone to customize this template.

Simply click on any element to edit text, change colors, or upload your own images.

Yes! This email template works independently of your WordPress theme.

It’s designed to be sent as an email, not displayed on your website, so it’s compatible with any WordPress setup.

Yes, this template is fully responsive and optimized for all devices. Your emails will look great whether your subscribers open them on desktop, tablet, or mobile.

Faith Wavinya

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