Title: wp-admin/admin-ajax.php?0. Last modified: August 30, 2016 --- # wp-admin/admin-ajax.php?0. * Resolved [happyecho](https://wordpress.org/support/users/happyecho/) * (@happyecho) * [10 years, 11 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/) * Hi with your plugin activated (I have paid version) I get this in my page speed test that slows down my site. After the 0. it also has a variety of #s that change each time. And the url returns just a 0. I googled it and everyone says its an error in the coding of the every single page said something like this: * If the Ajax request fails in wp-admin/admin-ajax.php, the response will be -1 or 0, depending on the reason for the failure. Additionally, if the request succeeds, but the Ajax action does not match a WordPress hook defined with add_action(‘ wp_ajax_(action)’, …) or add_action(‘wp_ajax_nopriv_(action)’, …), then admin- ajax.php will respond 0. * [https://wordpress.org/plugins/cleantalk-spam-protect/](https://wordpress.org/plugins/cleantalk-spam-protect/) Viewing 11 replies - 1 through 11 (of 11 total) * [Vlad Cleantalk](https://wordpress.org/support/users/vlad-cleantalk/) * (@vlad-cleantalk) * [10 years, 11 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6276907) * Hello, **happyecho**! Please, tell us URL of your website. * Thread Starter [happyecho](https://wordpress.org/support/users/happyecho/) * (@happyecho) * [10 years, 11 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6276982) * happyecho.com * But I removed the plugin and installed wp spam shield. Not as good but doesn’t slow my site * [Vlad Cleantalk](https://wordpress.org/support/users/vlad-cleantalk/) * (@vlad-cleantalk) * [10 years, 11 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6276992) * Hello, **happyecho**! Well, we need our oprotection to be enabled, so we can check this problem. Please, install it again. Also, you can switch JavaScript checking method in settings, as shown on screenshot: [http://funkyimg.com/i/Y6t4.jpg](http://funkyimg.com/i/Y6t4.jpg) After that, don’t forget to clear browser cache: [https://en.wikipedia.org/wiki/Wikipedia:Bypass_your_cache#Cache_clearing_and_disabling](https://en.wikipedia.org/wiki/Wikipedia:Bypass_your_cache#Cache_clearing_and_disabling) * [phoebe007](https://wordpress.org/support/users/phoebe007/) * (@phoebe007) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277254) * Hi Vlad Cleantalk, * I’ve got this problem too and have disabled Ajax in the CleanTalk settings to stop it from calling admin-ajax.php. * But what impact does this have on the functionality of the plugin? * I also want to add that I love the protection that Cleantalk has given my site– it’s fantastic! * Thanks * [Vlad Cleantalk](https://wordpress.org/support/users/vlad-cleantalk/) * (@vlad-cleantalk) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277255) * Hello, **phoebe007**! We’re using AJAX to improve protection from spam, it is more powerful, than old method (without AJAX). * [phoebe007](https://wordpress.org/support/users/phoebe007/) * (@phoebe007) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277256) * Hi Vlad, Thanks for the quick reply. So you are saying that the user experience on my website will remain the same, but that some spam messages may not be caught by CleanTalk when AJAX is turned off? * [Vlad Cleantalk](https://wordpress.org/support/users/vlad-cleantalk/) * (@vlad-cleantalk) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277257) * Hello, phoebe007! Turning AJAX off can cause problems with some caching plugins. If you’re not using it, so switching this option will not reflect functionality of plugin. * [phoebe007](https://wordpress.org/support/users/phoebe007/) * (@phoebe007) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277258) * Hi Vlad, Can you please elaborate on the problems i might see? I’m using W3 Total Cache. Are there any known issues with it? How can I test to determine if the issue is affecting me? Thank you * [Vlad Cleantalk](https://wordpress.org/support/users/vlad-cleantalk/) * (@vlad-cleantalk) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277259) * Hello, **phoebe007**! Usually we haven’t problems with w3 total cache. You can check it yourself by filling few forms on your site. If you won’t receive errors– so, everything is ok. * [phoebe007](https://wordpress.org/support/users/phoebe007/) * (@phoebe007) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277260) * Thank you 🙂 * Plugin Author [Denis Shagy](https://wordpress.org/support/users/shagimuratov/) * (@shagimuratov) * [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277261) * You are welcome, phoebe007! * Thank you for good questions. Viewing 11 replies - 1 through 11 (of 11 total) The topic ‘wp-admin/admin-ajax.php?0.’ is closed to new replies. * ![](https://ps.w.org/cleantalk-spam-protect/assets/icon-256x256.gif?rev=3539767) * [Anti Spam for Contact Forms, Comments & Online Stores - CleanTalk](https://wordpress.org/plugins/cleantalk-spam-protect/) * [Frequently Asked Questions](https://wordpress.org/plugins/cleantalk-spam-protect/#faq) * [Support Threads](https://wordpress.org/support/plugin/cleantalk-spam-protect/) * [Active Topics](https://wordpress.org/support/plugin/cleantalk-spam-protect/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/cleantalk-spam-protect/unresolved/) * [Reviews](https://wordpress.org/support/plugin/cleantalk-spam-protect/reviews/) ## Tags * [ajax](https://wordpress.org/support/topic-tag/ajax/) * 11 replies * 4 participants * Last reply from: [Denis Shagy](https://wordpress.org/support/users/shagimuratov/) * Last activity: [10 years, 3 months ago](https://wordpress.org/support/topic/wp-adminadmin-ajaxphp0/#post-6277261) * Status: resolved