I downgraded to A+ 2.0.5. All is working now. Problem solved but cannot upgrade Appointments+ plugin to 2.1.0 due to above problem.

Apologies if this is not the correct forum for getting help with this problem. Where else can I go?

I have copied over a fresh install of A+ Still no joy. Problem persists.

Hi, I did a fresh install of Worpdress 4.7.5 Problem persists: POST https://www.psydev.co.za/wp-admin/admin-ajax.php 403 (Forbidden)

Hi, I also added to both php.ini and php5.ini ; Maximum allowed size for uploaded files. upload_max_filesize = 64M ; Must be greater than or equal to upload_max_filesize post_max_size = 64M Problem persists.

Problem persists. I have granted access to WPMUDEV support in the backend. Thank you.

Hi, After seeing the 403 (Forbidden) error, I did the following: - Changed theme to default 2017. Only A+ activated. Problem persists. - Deleted .htaccess file. Problem persists. - Reset permalink structure. Saved. Problem persists BUT saw NO new .htaccess file on server was created after saving. Could there be a problem here? - Checked file permissions - wp-admin folder - 755. - admin-ajax.php - 644 Uploaded old .htaccess file. Content is: Options +FollowSymLinks # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteRule ^index.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] </IfModule> # uploaded files RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L] # add a trailing slash to /wp-admin RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L] RewriteCond %{REQUEST_FILENAME} -f [OR] RewriteCond %{REQUEST_FILENAME} -d RewriteRule ^ - [L] RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L] RewriteRule ^([_0-9a-zA-Z-]+/)?(.*.php)$ $2 [L] RewriteRule . index.php [L] # END WordPress

Hi there, Thank you for your responses. Ash, I deactivated all plugins. Then activated A+ only. Same problem. Same with the theme. I use a Twentyfifteen child theme. Below is the output from the Console output when I try to add another entry. load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:9 JQMIGRATE: Migrate is installed, version 1.4.1 VM2781:1 POST https://www.psydev.co.za/wp-admin/admin-ajax.php 403 (Forbidden) (anonymous) @ VM2781:1 send @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:4 ajax @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:4 n.(anonymous function) @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:4 AppointmentsList.saveEditor @ admin-appointments-list.js?ver=1:224 dispatch @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3 r.handle @ load-scripts.php?c=0&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3