We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Downloading a .xlsx file declared as excel MIME type, firefox appends .xls suffix and the file cannot be opened with OpenOffice.

Philippe2705
Philippe2705
more options

I have a program generated Planning.xlsx file on my web server. The Mime definition is as follow: .xlsx;application/vnd.openxmlformats-officedocument.spreadsheetml.sheet When the file is downloaded with IE or Safari, the associated program (Scalc.exe) opens the .xlsx file without any problem. With Firefox however, the download program appends a .xls suffix to the file name (Planning.xlsx.xls) and Scalc is unable to read the file whose content does not match the suffix. Changing the default program to Excel works fine but I can't imagine this can be a definitive solution.

I have a program generated Planning.xlsx file on my web server. The Mime definition is as follow: .xlsx;application/vnd.openxmlformats-officedocument.spreadsheetml.sheet When the file is downloaded with IE or Safari, the associated program (Scalc.exe) opens the .xlsx file without any problem. With Firefox however, the download program appends a .xls suffix to the file name (Planning.xlsx.xls) and Scalc is unable to read the file whose content does not match the suffix. Changing the default program to Excel works fine but I can't imagine this can be a definitive solution.

Modified by Philippe2705

All Replies (2)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Try "Reset Download Actions": http://kb.mozillazine.org/File_types_and_download_actions

Philippe2705
Philippe2705 Question owner
more options

It works! Thanks for your help.

Philippe.