It is really frustrating when you can’t access wp-admin folder. It hapens to me once and, now I’m sharing posible solutions with you. It can be caused by several issues. So this is what you should check, and possibly solve it. Solution 1 Rename your Plugins folder and check if you can access admin menu, if issue has been caused by plugin you will be able to access. Than try to isolate the plugin, by disabling them one by one. Solution 2 Rename your original wp-admin and wp-include folders, Read more