Sergey Biryukov

With the upgrade to WordPress 4.7.1, some non-image files fail to upload on certain server setups. This will be fixed in 4.7.3, see the <a href="https://core.trac.wordpress.org/ticket/39550" rel="nofollow ugc">Trac ticket</a>.
In the meantime, this plugin is a workaround that disables the recently introduced strict MIME check to restore the upload functionality.
Don’t forget to remove the plugin once WordPress 4.7.3 is available!

Disable Real MIME Check


IDK if it's a bug in WC or something, but I can't upload .csv files, had to hook this in so I can update some prices... very helpful!


works in WP 6.1 and WC 7.5

Restores the ability to upload non-image files in WordPress 4.7.1 and 4.7.2.

Sebastian Krysmanski

By default, WordPress only allows a very limited set of file types to be uploaded. This set is defined by a so called 
“white list”. What’s not on the white list can’t be uploaded.
This plugin allows you to extend this white list through a settings page.
Additionally it comes with a wide range of file types that are enabled automatically, like audio files (ac3, mp4, …) 
and video files (avi, mkv, …).

Upload File Type Settings Plugin

This plugin allows admins to specify additional file types that are allowed for uploading to…

Disable Real MIME Check vs Upload File Type Settings Plugin