Mozilla Relay is experiencing issues with call and text delivery. We’re working on a fix. Check Mozilla Status for updates.

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

application/octet-stream

  • 1 reply
  • 14 have this problem
  • 1 view
  • Last reply by guigs

more options

I have tried resetting the mozilla firefox browser a couple of times to get the browser to reset to default, however, I kept getting the application/octet-stream pop-up. I have saved the file and it gives me the option to open up with a different program. Uh, any suggestions or any idea why it keeps doing this?

I have tried resetting the mozilla firefox browser a couple of times to get the browser to reset to default, however, I kept getting the application/octet-stream pop-up. I have saved the file and it gives me the option to open up with a different program. Uh, any suggestions or any idea why it keeps doing this?

All Replies (1)

more options

Hi turnteched, This would be the dialogue that pops up after a download has finished. For Firefox for desktop this is in the Options/Preferences > Applications menu. If the field is set to always ask this will happen. Set How Firefox Handles Different File Types But this preference is different in mobile.

Is there a webpage that you are seeing in Firefox that initiated the download?

Modified by guigs