Hi, we are running MediaWIki version 1.31.6 and everytime I am trying to upload a docx file, I get an error message "file extension ".docx" doesn't match MIME-type (application/zip).", though "docx" is in wgFileExtensions. Does anyone know this issue? Thanks, Henry
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This rings a bell. I think I ran up against it a few years ago and just stopped uploading .docx files. I think you can turn off MIME-type detection. Maybe see Manual:MIME type detection for ideas.
make sure that .docx really is a .docx and not a .doc