This scenario can come from plugins modifying your .htaccess documents to add or change regulations, or from an old WordPress MU configuration not up to date since Multisite was extra. It only intercepts page requests and functions on any WordPress Internet site. The wp-admin Listing and wp-login.php site become inaccessible, https://www.tumblr.com/oxavin/783861904352411648/%E6%A0%B8%E5%BF%83%E5%8A%9F%E8%83%BD%E4%B8%8E%E4%BC%98%E5%8A%BF