xlsm-extension STILL not recognized

I would like to reopen the following problem: xlsm-extension-mis-recognized

I have tried for 1.5 hours to implement this very simple task, but it seems that XLSM is a special case that just won’t work.

I did everything: used various plugins, snippets, etc. I verified that the mime-type was correctly added to the list of allowed mime-types, BUT STILL, the WP Media Upload refuses to upload .xlsm files.

I need help!

function my_mime_types( $mime_types ) {
  $mime_types['xlsm'] = 'application/vnd.ms-excel.sheet.macroEnabled.12';
# I also tried:
# $mime_types['xlsm'] = 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
# and various others.

  return $mime_types;
}

add_filter( 'mime_types', 'my_mime_types' );

• This topic was modified 4 years, 9 months ago by mondaysam.
• This topic was modified 4 years, 9 months ago by mondaysam.