Title: admin-ajax.php issue
Last modified: August 23, 2022

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# admin-ajax.php issue

 *  Resolved [Terry](https://wordpress.org/support/users/tbilton/)
 * (@tbilton)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/admin-ajax-php-issue-5/)
 * I have an issue with Slider Revolution where it is unable to generate a slide
   preview, with the error message saying “Unable to load preview due to some conflict
   with another plugin”
 * I reached out to Theme Punch to ask them and they tell me that this issue is 
   caused by admin-ajax.php being blocked on the server side.
 * I reached out to our ISP and they told me to put Wordfence in Learning mode, 
   then to try generating the preview again, and then putting Wordfence back in 
   enabled mode, which i did, but no luck.
 * I have a Firewall rule Add Allow List/URL for /wp-admin/admin-ajax.php enabled,
   but no difference.
 * Please can you tell me what else i can do to fix this issue.
 * Terry Bilton

Viewing 1 replies (of 1 total)

 *  Plugin Support [wfphil](https://wordpress.org/support/users/wfphil/)
 * (@wfphil)
 * [3 years, 9 months ago](https://wordpress.org/support/topic/admin-ajax-php-issue-5/#post-15960138)
 * Hi [@tbilton](https://wordpress.org/support/users/tbilton/)
 * It sounds like Wordfence is not involved.
 * First, check that the option **_Delete Wordfence tables and data on deactivation_**
   is disabled in the **_General Wordfence Options_** section on the **_All Options_**
   page.  It is disabled by default.  If you do need to disable it then make sure
   to press the **_SAVE CHANGES_** button. If you are not sure, then the check box
   must be blank for this option to be disabled. If it is enabled when you deactivate
   Wordfence then you will lose all of your settings.
 * Now deactivate Wordfence on the WordPress **_Plugins_** page.
 * If you have the same problem when Wordfence is deactivated then Wordfence can’t
   be involved.
 * You can then activate Wordfence again.

Viewing 1 replies (of 1 total)

The topic ‘admin-ajax.php issue’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [wfphil](https://wordpress.org/support/users/wfphil/)
 * Last activity: [3 years, 9 months ago](https://wordpress.org/support/topic/admin-ajax-php-issue-5/#post-15960138)
 * Status: resolved