Description

This article is from the Spreadsheets FAQ, by Russell Schulz casfaq@locutus.ofB.ORG with numerous contributions by others.

10.19 What is the correct, registered MIME Content-Type for Excel files?

application/vnd.ms-excel

see http://www.isi.edu/in-notes/iana/assignments/media-types/application/vnd.ms-excel

so don't use any of these:
application/ms-excel
application/msexcel
application/excel
application/x-ms-excel
application/x-msexcel
application/x-excel
application/octet-stream

Continue to:

• prev: 10.18.2 How come my SUM(IF()) array formula doesn't work? (spreadsheets: Excel)
• Index
• next: 10.20 How do I protect myself in Excel against "unary" minus type bugs in my formulas?