Title: loopback test faliure
Last modified: February 28, 2018

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# loopback test faliure

 *  Resolved [Kim White](https://wordpress.org/support/users/kimwhite/)
 * (@kimwhite)
 * [8 years, 2 months ago](https://wordpress.org/support/topic/loopback-test-faliure/)
 * When we have this plugin on it causes this error with my server tools:
 * Active wp-cron.php loopback test failure: `cURL error 28: Operation timed out
   after 4001 milliseconds with 0 bytes received`.
 * Any ideas what’s happening here.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Contributor [mbrsolution](https://wordpress.org/support/users/mbrsolution/)
 * (@mbrsolution)
 * [8 years, 2 months ago](https://wordpress.org/support/topic/loopback-test-faliure/#post-10025884)
 * Hi, please read the following [explanation](https://www.samuelaguilera.com/post/curl-error-28-wordpress)
   about this error. The developer also provides solutions.
 * Kind regards
 *  anonymized-14239226
 * (@anonymized-14239226)
 * [8 years ago](https://wordpress.org/support/topic/loopback-test-faliure/#post-10275857)
 * I’m concerned that the explanation say’s the issue is not tied to any particular
   plugin. Also that it directs readers to two outdated plugins to for testing.
   
   Removing Simple PayPal Shopping Cart resolves the error.
 * It should also be noted that Health Check is very specific when calling out Simple
   PayPal Shopping Cart:
 * > Testing wordpress-simple-paypal-shopping-cart: The loopback request to your
   > site failed, this may prevent WP_Cron from working, along with theme and plugin
   > editors.
   >  Error encountered: (0) cURL error 28: Operation timed out after 10001
   > milliseconds with 0 bytes received
   > All other plugins report: “The loopback request to your site completed successfully.”
 * Still, Simple PayPal Shopping Cart is otherwise a GREAT plugin, beautifully executed.
   
   I have no intention of removing it unless I have to and continue to look for 
   a solution.
 *  Plugin Contributor [mbrsolution](https://wordpress.org/support/users/mbrsolution/)
 * (@mbrsolution)
 * [8 years ago](https://wordpress.org/support/topic/loopback-test-faliure/#post-10276216)
 * Hi @cbcbcb, can you open up a new support ticket. This thread is marked as resolved.
   You can put a reference to this thread if you like.
 * Thank you

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘loopback test faliure’ is closed to new replies.

 * ![](https://ps.w.org/wordpress-simple-paypal-shopping-cart/assets/icon-128x128.
   png?rev=2722490)
 * [Simple Shopping Cart](https://wordpress.org/plugins/wordpress-simple-paypal-shopping-cart/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wordpress-simple-paypal-shopping-cart/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wordpress-simple-paypal-shopping-cart/)
 * [Active Topics](https://wordpress.org/support/plugin/wordpress-simple-paypal-shopping-cart/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wordpress-simple-paypal-shopping-cart/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wordpress-simple-paypal-shopping-cart/reviews/)

## Tags

 * [curl error](https://wordpress.org/support/topic-tag/curl-error/)
 * [loopback](https://wordpress.org/support/topic-tag/loopback/)

 * 3 replies
 * 3 participants
 * Last reply from: [mbrsolution](https://wordpress.org/support/users/mbrsolution/)
 * Last activity: [8 years ago](https://wordpress.org/support/topic/loopback-test-faliure/#post-10276216)
 * Status: resolved