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.

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.

Partially downloaded file is lost in firefox. Big Problem

  • 2 replies
  • 1 has this problem
  • 11 views
  • Last reply by cor-el

sadiqeen3210
sadiqeen3210
more options

hi. here is the story, Please read carefully.

Earlier i was downloading a 3.7 GB file in Mozilla. The file was .ISO format Around 2 GB of file was downloaded. But unfortunately i refreshed the Firefox then it restarted and i see an "Old Firefox Data" folder in my desktop

That download is now restarted from 0MB again :) :) :) The total size of that folder "Old Firefox Data" is 25.6 MB which means that the incomplete download file (around 2GB) is not in that folder.

Please tell me how to find partially downloaded file and resume download from that partially downloaded file.

hi. here is the story, Please read carefully. Earlier i was downloading a 3.7 GB file in Mozilla. The file was .ISO format Around 2 GB of file was downloaded. But unfortunately i refreshed the Firefox then it restarted and i see an "Old Firefox Data" folder in my desktop That download is now restarted from 0MB again :) :) :) The total size of that folder "Old Firefox Data" is 25.6 MB which means that the incomplete download file (around 2GB) is not in that folder. Please tell me how to find partially downloaded file and resume download from that partially downloaded file.

Modified by sadiqeen3210

All Replies (2)

sadiqeen3210
sadiqeen3210 Question owner
more options

If this question is in wrong category please some one move in respective category

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

The .part file is likely not in the "Old Firefox Data" folder on the desktop and probably wasn't in the cache, but either in the OS %temp% folder or in the final destination folder. If you've already tried to download this file again then the .part file might have been overwritten, especially if you saved the file to the same location. It if usually better to use an external download manager to download large fis that take more than 30 minutes to avoid issues with resuming an interrupted download.

The normal procedure for cases like this where you want to resume an interrupted download is as follows:

Make sure to backup the .part file and the final file without the .part before starting Firefox. Try these steps to resume an unfinished download when you still have the .part file.

  1. Move the old .part partial download and the final file without the .part that has size 0 to another location.
  2. Start a new download and pause it, don't close Firefox.
  3. Copy the two files (.part and 0 byte final) that you moved above back to the download location to replace the new files that were created.
  4. Resume the download in Firefox.