Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

v50.0.2: *all* left-clicked download links appear not to start at all - but actually files are SILENTLY downloaded as .part to temp folder

  • 3 replies
  • 1 has this problem
  • 1 view
  • Last reply by sydneyfife

more options

Since a few hours ago, any download links I left-click are not processed as expected:

- there is no indication that a download link was clicked at all, i.e. no confirmation, no dialog box to choose the destination folder, etc.

- the downloads DO start though, files are downloaded SILENTLY to Temp folder (C:\Users\***\AppData\Local\Temp) as .part files (and remain there when download is complete)

- this is the case on any website downloads I've tried

- the library has no record that any files were downloaded

- there is also no indication for a download being completed

- downloaded files are intact as far as I can tell (tested by renaming and extracting a .zip)

- however, RIGHT-clicking and choosing "save link as" works fine

- also, the download manager "downthemall" context menu items work fine (e.g. "save link with downthemall")

- ive also noticed that closing the tab the download originated from does not cancel the download, for that I have to close ff entirely


Steps taken so far:

- restarted ff

- restarted computer

- ran virus scan (avast), ran malwarebytes scan

- ran ff with all extensions disabled: same problem

- went through steps here: https://support.mozilla.org/en-US/kb/cant-download-or-save-files

- tried downloading files with different browser: worked fine

- tried downloading files with different ff profile: worked fine

- tried downloading files in ff safe mode: worked fine


...any ideas?

Since a few hours ago, any download links I left-click are not processed as expected: - there is no indication that a download link was clicked at all, i.e. no confirmation, no dialog box to choose the destination folder, etc. - the downloads DO start though, files are downloaded SILENTLY to Temp folder (C:\Users\***\AppData\Local\Temp) as .part files (and remain there when download is complete) - this is the case on any website downloads I've tried - the library has no record that any files were downloaded - there is also no indication for a download being completed - downloaded files are intact as far as I can tell (tested by renaming and extracting a .zip) - however, RIGHT-clicking and choosing "save link as" works fine - also, the download manager "downthemall" context menu items work fine (e.g. "save link with downthemall") - ive also noticed that closing the tab the download originated from does not cancel the download, for that I have to close ff entirely Steps taken so far: - restarted ff - restarted computer - ran virus scan (avast), ran malwarebytes scan - ran ff with all extensions disabled: same problem - went through steps here: https://support.mozilla.org/en-US/kb/cant-download-or-save-files - tried downloading files with different browser: worked fine - tried downloading files with different ff profile: worked fine - tried downloading files in ff safe mode: worked fine ...any ideas?

Modified by sydneyfife

Chosen solution

  • shrug*

I "resolved" this by backing up bookmarks, passwords and settings and migrating that stuff to a fresh profile ("refresh function"), as well as reinstalling and -configuring my extensions.

Read this answer in context 👍 0

All Replies (3)

more options

Chosen Solution

  • shrug*

I "resolved" this by backing up bookmarks, passwords and settings and migrating that stuff to a fresh profile ("refresh function"), as well as reinstalling and -configuring my extensions.

more options

Note that if files are downloaded to the temp folder and aren't moved/renamed to the selected destination folder that your security software might be locking the file and prevent Firefox from copying the file.

It is possible that security software (anti-virus, firewall) is causing the problem. Try to disable security software temporarily to see if that makes a difference.

more options

cor-el said

Note that if files are downloaded to the temp folder and aren't moved/renamed to the selected destination folder that your security software might be locking the file and prevent Firefox from copying the file. It is possible that security software (anti-virus, firewall) is causing the problem. Try to disable security software temporarily to see if that makes a difference.


Ah, my apologies, I had actually already tried that as well before I even posted here - it did not help in my case, unfortunately.

Although, logically, this should not be something caused by security software either: why would it only have affected one single browser profile (of several) and one single browser (of several)?