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I downloaded a file from Mega.co.nz, and when it finished downloading I closed the open file command, and now I cannot find the downloaded file.

I use Firefox to access the download link.

So, what is the location of the downloaded file?

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12 Answers 12

The site has nothing to do with this. The file has been downloaded to a (default) pre-set location, or wherever you have told Firefox to store it in a prompt.

First try opening your downloads: Firefox Button > Downloads (pops up). In here should be a list of all your downloads.

If this doesn't work:

You can find your pre-set download location here: Firefox Button > Options (pops up) > General Tab.

In this tab, there's a section "Downloads" where two options are displayed: (1) Save files in (2) Always ask where to store files.

In case (1), check this folder. In case (2), you have chosen a location yourself. You can use the Windows Explorer search function (if you really don't have a clue) for the file name, if you know it.

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When you choose to Open a file rather than Save it, firefox saves the file in your temp directory. On Windows, you can press Win+R and then type %temp% to open your temp directory.

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In recent versions of Firefox (version 25 at the time this answer was written) there is an arrow-shaped download icon on the right side of the Firefox toolbar. When you have completed a download, the download icon changes its color to green. Click on the download arrow and it will display a list of completed downloads as shown in the screenshot below. Select any downloaded file in the list by moving the mouse cursor over it, and that downloaded file will change color to show you that you have selected it. Right-click the downloaded file that you have selected and from the popup menu select Open Containing Folder and a file browser window (Windows Explorer in Windows) will open at the folder where your downloaded file is located.

enter image description here

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1  
+1 looking at his question, I figured an answer should be simple. I actually knew and would've known it was the down arrow but wouldn't have known looking at other answers. +1 'cos your picture is worth many words. –  barlop Nov 13 '13 at 3:10

Mega.co.nz downloads the files in a temporary folder named idb, This folder is located here: C:\Documents and Settings\user\Application Data\Mozilla\Firefox\Profiles\frxzit8g.default\indexedDB\https+++mega.co.nz\idb

In this temporary folder the download creates a lot of small files. 1 MB size per file.

No idea, how to combine these all files.

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To combine the files, open a command prompt window then navigate to the folder where the files are located then use the command "copy /b file1 + file2 + ... + fileN combinedfile.ext" without quotes. It works for me.

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If you are using most recent versions of Firefox, now MEGA downloaded files are treated as a "blob resource" (to purposely avoid writing files using HTML5, something Chrome did when MEGA launched). Not sure if History might remember the "blob resource" address. However and from personal experience it either is a cached file or a link to an actual "process" that downloads the file as it should. Exiting Firefox does clear the "blob resource" link.

On older versions, probably a cached file, but that would also be deleted upon exit.

My recommendation: try re-downloading the file.

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Mega downloads the files in a temporary folder named idb, This folder is located here:

C:\Documents and Settings\user\Application Data\Mozilla\Firefox\Profiles\frxzit8g.default\indexedDB\https+++mega.co.nz\idb

In this temporary folder the download creates a lot of small files, after download is finished, it locates the entire download file at the FireFox download file.

If the Mega downloads is interrupting or stopping for any reason, the temporary file is stuck and takes a lot of free space.

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\Users\nishant\AppData\Roaming\Mozilla\Firefox\Profiles\[something].default\indexedDB\https+++mega.co.nz\idb
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Hello and welcome to superuser.com. Your answer is vague and could be troublesome to understand for people with less experience with Windows and how the structure is build up. Could you elaborate a little to make your answer better? –  Mogget Oct 27 '13 at 15:48

If you want to find where Firefox is internally saving the file:

  1. In the browser URL bar type in about:config and accept the warranty warning.
  2. Type in browser.download.dir; the value presented is the save location.
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If you use the mega.co.nz Firefox extension on Windows, it downloads the files to %USERPROFILE%\Desktop\

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Mozilla & MEGA

I found all the cached files I've downloaded in C:\Users\...\AppData\Roaming\Mozilla\.

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the question is about downloaded file location,not the cache of the firefox –  BlueBerry - vignesh4303 Sep 20 '13 at 9:31

The default location would be:

C:\Users\<YourAccountName>\AppData\Roaming\Mozilla\Firefox\Profiles\xxxxx.default\indexedDB\https+++mega.co.nz

Substitute the appropriate value for the xxxxx part.

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