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!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

How do I get more file types to show up under about:preferences#applications

more options

Hi

I use Firefox developer edition. During the latest update Mozilla removed my most loved feature that asked you what you wanted to do with a file before downloading it. I tried to fix this by going into the settings and changing it to always ask for every file type, but many file types are just missing and I am unable to get them to appear. I looked on my other computers and all file types are present there but not on my desktop for some reason. Is there any way to fix this or to get Firefox to ask before downloading again?

Thanks

(I added an img of what the settings look like)

Hi I use Firefox developer edition. During the latest update Mozilla removed my most loved feature that asked you what you wanted to do with a file before downloading it. I tried to fix this by going into the settings and changing it to always ask for every file type, but many file types are just missing and I am unable to get them to appear. I looked on my other computers and all file types are present there but not on my desktop for some reason. Is there any way to fix this or to get Firefox to ask before downloading again? Thanks (I added an img of what the settings look like)
Attached screenshots

All Replies (2)

more options

Firefox automatically adds action to this menu if you tick the box on the open with (download) dialog to do this automatically and the server sends the file with a valid content type and not with a generic content type like "application/octet-stream" or "content-disposition:attachment".

more options

I was able to add the default action 'save file' for Matroska files to the content list by doing a menu 'File-Open File', choosing a .mkv file from a folder and then checking the box 'do this automatically' in the dialog that pops up when you click 'open'.