# Troubleshooting CDN Issues¶

You can narrow down CDN issues through the following steps:

• Visit the CDN URL and verify that it is accessible
• Did you enable the CDN?
• Did you remember to start the CDN URL with https:// and end it with /?
• Does the Origin URL start with // and end with /?
• View Page Source, and verify that links are indeed pointing to the CDN URL.

You can verify that the CDN itself works by manually replacing the domain in the original URL with the CDN domain for any static file. If it loads correctly, then the CDN works. If it does not load, you may have a problem on the CDN side.

Example

If the original URL of an image is https://www.domain.com/wp-content/uploads/2020/12/12/test.jpg and the CDN URL is https://cdn.domain.com, then try visiting https://cdn.domain.com/wp-content/uploads/2020/12/12/test.jpg.

## Bypass CDN in AJAX¶

If you have a conflict, and you need to bypass CDN functions in AJAX, you can either add some code to your theme's functions.php, or you can call the appropriate filter when using AJAX.

### In the Theme's Functions¶

Add the following to your theme's functions.php file:

defined( 'DOING_AJAX' ) && add_filter( 'litespeed_can_cdn', '__return_false' );

### Call the Filter¶

When using AJAX, you can call the above filter, and return false.

Last update: January 30, 2021