Thread:Project:Support desk/Add mime type for visio/reply (3)

If uploading to your wiki is controlled and you trust the people who have that privilege, you can use $wgVerifyMimeType to disable the mime checks.

If this is a Unix server, try logging in and seeing what "file --mime-type VISIO-FILE" gives you. On my system, I get "application/vnd.ms-office".

If you want MW to be able to differentiate between Visio files and MSWord files, try filing a bug.