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

Why Firefox can't download files and extensions after reinstall unless I give it Administrator privelegies on Windows 10?

  • 3 respostas
  • 1 has this problem
  • 1 view
  • Last reply by nickb.ufeim

more options

I restored my AppData folder. After that Firefox stopped downloading any files. I tried to reinstall it, but I got an error about unabling to create temporary archive from 7z. Then I tried to run installation as Administrator and Firefox was installed. Apparently sync wasn't working. I tried to install some extensions manually and got error message "Download failed. Please check your connection.", also, I couldn't download any file from any site (fail). When I start Mozilla as administrator, all downloads work fine, but application is working for another user.

Any idea how to fix it?

I restored my AppData folder. After that Firefox stopped downloading any files. I tried to reinstall it, but I got an error about unabling to create temporary archive from 7z. Then I tried to run installation as Administrator and Firefox was installed. Apparently sync wasn't working. I tried to install some extensions manually and got error message "Download failed. Please check your connection.", also, I couldn't download any file from any site (fail). When I start Mozilla as administrator, all downloads work fine, but application is working for another user. Any idea how to fix it?

Chosen solution

Found the cause: looks like I broke my Temp folder (inside AppData), so my environment variables "TMP" and "TEMP" was pointing to non-existed (or maybe forbidden) path. I've changed them to correct path and issue was solved.

Ler a resposta no contexto 👍 0

All Replies (3)

more options

Try using the Refresh feature on the Profile where you "restored" your AppData folder.

https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

more options

the-edmeister said

Try using the Refresh feature on the Profile where you "restored" your AppData folder. https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings

Thanks! I restored my old profile with extensions, but download issue (and new extensions issue) still remains. I tried to switch off Windows firewall, but situation didn't change. Also downloads work well on built-in Edge browser and don't work on mozilla-based Tor browser.

nickb.ufeim modificouno o

more options

Chosen Solution

Found the cause: looks like I broke my Temp folder (inside AppData), so my environment variables "TMP" and "TEMP" was pointing to non-existed (or maybe forbidden) path. I've changed them to correct path and issue was solved.

nickb.ufeim modificouno o