HI everyone. I have very strange problem and Im running out of ideas. Im tryong to troubleshoot xml uploads on multisite setup with 4 domains and WP version 4.9.9. Php version 7.2. Uploading xml works fine if file is up to 2 mb. For larger files, i got this error “sorry, this file type is not permitted for security reasons.”
On the same host there is more WP pages, and I tested uploading there 7 MB xml and it went fine. So its not php issue: upload_max_filesize 48mb
Also nginx config has max post size 48 mb. Error is very confusing. I tried to troubleshoot it. Unfortunately as an admin I do not see networking and I cannot install plugins, but I did few other things, like define(‘ALLOW_UNFILTERED_UPLOADS’, true) and I allowed file extension in /path/to/Wordpress-root-install/wp-contents/themes/current-theme/functions.php. I cannot find out where in wordpress change this filesize limitation. During upload I can see allowed file size 39 mb. Also when I click new media – I go the same error. Please helep me if anyone has some ideas. Thank you!
