Firefox Community Forum

Hello all.

For a while, all downloads have failed on Firefox (150.0.1), Windows 11. No file downloaded, and download tab shows a 'failed' underneath the file name. This holds true when downloading any file type, via firefox directly, or an outside app (Discord, for example) that hooks into the browser. Downloads work on other browsers (Chrome).

• I have checked about:config and reset the recommended options from other articles ("...lastDir" was the only one of the list that had an entry).
• Starting in Troubleshooting / Safe Mode does not fix.
• I currently run Norton - disabling it did not seem to fix.
• I don't have a Family group, so it's probably not the parental controls issue (though I think that was solved?)

I recognize that the lack of ability to download in Safe Mode points towards the possibility of an outside program blocking downloads, but I'm at a bit of a loss, since other browsers do work.

Thanks in advance for any ideas or suggestions.

I upgraded to Firefox 135.0 the other day and tried it out on a site I have used several times a week for at least 10 years. A .csv file that I regularly download failed to do so. The system simply failed to respond, and nothing appeared in the download window. The site offers the option of downloading the same data in a .xls file, and that worked. (My previous, obsolete, Firefox gave me the option of where to download to, and remembered the choice between vists. Such is progress!)

When I download with this browser, I cannot open the file and it states download has "failed". Any other browser I use allows me to open the file. I use Firefox most often because I like the way it performs, but the download issue causes me to look elsewhere for a viable browser. I cannot seem to find what is causing the download failure and am hoping you can offer a reason that will provide a fairly quick fix.

We run the www.rarlab.com website and several users have complained that the download of the exe file for the English version of WinRAR 7.20 downloads a 0mb file and is also flagged as malicious. The file can be downloaded easily on the Edge browser and it is considered safe by Google too.

Beim Herunterladen von Dateien wird mir immer angezeigt "Originaldatei heruntergeladen. API Schlüssel ungültig. Lizenz überprüfen. Die heruntergeladene Datei finde ich aber nirgendwo. Was muss ich machen?

Trying to download Firefox.com. Screen states “ your download was interrupted “ No explanation why or what to do to allow download to succeed?

i can see the video detected but when i click on the blue download button it says sadly we failed at downloading that specific video. It does this for youtube videos no matter how many times i try it. i never had this problem before and it seemed to have started in may of 2026

I've file download feature in my web application. When polling of file percentages is complete i am sending file to the client (browser) But in fire fox it downloading an .html file instead of actual file. Whereas in chrome it working as expected.

Beforehand, I must say that I am a big fan of Firefox, I've been an user since the beginning. However, sadly I am switching to Safari due to the fact that I work with file transfers through Wetransfer platform and fro some unknown reason I get incomplete downloads from Firefox. I tried all the steps and procedures to refresh, uninstall, reinstall, troubleshoot mode and even switching accounts. Furthermore, nothing worked. I hope you guys can fix this issue and have me back. I'll be delighted. Thank you and until next time!

Cristian

I received this download from Firefox today, July 22, 2025: xRqj7qhl.html - Size: zero bytes - Kind: HTML text . I've never experienced this before. Is it legitimate? Thanks