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My current version of Firefox is 149.0 (64 bit) Mozilla Firefox for Arch Linux Arch Linux - 1.0 I am running this on two computers, a laptop and a desktop, both running Arch Linux, currently at 6.19.10. I use the laptop much more, and recently noticed that I cannot upload or download files with Firefox. No file selection window opens and the request is simply ignored. Nothing appears in my Downloads folder. Meanwhile, I also noticed that this function works just fine on the desktop computer. I don't remember making any settings changes. I do have popups generally disabled but can enable them for certain sites. In any case, I have tried enabling popups and redirects completely with no change. I figure there must be something different about the settings on these two Firefox installations, but what? What can you tell me? Or ask me? Thanks.

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.

Ever since 149.02 update Firefox has been unable to download any images automatically. They are always 'canceled'. I have to manually click RETRY button for it to work.

I have been through a ton of possibilities with Gemini, none of which worked. Apart form totally reset Firefox, which I refuse to do because WTF !

Gemini gave up and suggested I post something on here. I'll just switch to Brave until 149.03 fixes it.

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

Mac Tahoe 26.4. Any attempt to download or upload results in a file chooser/picker/browser panel that shows part of the finder interface but not all. Can't interact with it besides switching between sidebar items, no files visible, can't close or exit this window, can't interact with anything else. The only active button on the top of the window is the fullscreen button. Have to force quit firefox every time.

I tried troubleshoot mode and it did nothing. There is a workaround for some download links where I can open them in another tab and they automatically download without opening the window. Drag and drop options seem to work for uploads when they're available.

I took screenshots and was going to attach them, but this problem prevents me from doing that. This browser's sorta bricked for me at the moment.

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.

In some regions, the offline translation language packs fail to download properly in Firefox. Users are unable to complete the download, which prevents the translation feature from working offline. Please look into potential regional network restrictions or server accessibility issues. Thank you.

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