Firefox 社群討論區

As of today, every single time I try to download something, Firefox instantly cancels it and I'm not sure what the issue is. I've disabled adblock and Malwarebytes and refresh Firefox—same issue. Hitting retry from the download panel works but I can't figure out why the first download attempt is always cancelling, even if it's the same file. I'm not even downloading big files.

All of a sudden I can't download files from apps I use all the time... and download files from all the time. I just tried in Edge & I can download just fine. This just happened this morning. I downloaded multiple files yesterday within firefox & the same apps I'm running today.

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 am unable to download large files from an MS Sharepoint account in Firefox. Small files are fine (less than 100MB). Large files download fine if I use MS Edge browser but I don't want to have to use Edge unless absolutely necessary. Using Firefox Troubleshoot mode doesn't help. Clearing the cach/cookies etc doesn't help. When downloading a 600MB file, the download repeatably fails around 90-100MB. My OS is Linux Mint xfce64. Obviously MS doesn't like firefox for some reason, even in Troubleshoot mode. thanks in advance for any help.

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.

1. This could be under-reported problem. People will have problems reporting this bug

2. Whenever I try to save anything (image, website, Ctrl+S, print website to file, Ctrl+P, screenshots, same problem) my Firefox tries to "Open" something instead. I see dialog window with header SAVE, but the final button is labeled "Open" and after clicking it usually nothing happens. A haven't been able to save anything since this update. Only system-wide screenshots work for me now.

I had to use another installation in order to attach screenshot here. In the problematic 149.0, after clicking "Browse..." and selecting file, nothing happens, and no upload, moreover button won't respond to clicking anymore. Then I force refresh, and this text within this form disappears, but attached image appears.

3. Yesterday I have updated my Firefox to 149.0, using official debian sources, mozilla-deb - 1.0 -

cat /etc/apt/sources.list.d/mozilla.list deb [signed-by=/etc/apt/keyrings/packages.mozilla.org.asc] https://packages.mozilla.org/apt/ mozilla main

4. I have Linux Debian, (old version, Stretch+backports, yes, I am moving things already to new hdd), maybe it's related: 4.9.0-19-amd64 #1 SMP Debian 4.9.320-2 (2022-06-30) x86_64 GNU/Linux )

In order to fill this form I am using separate installation 140.9.0esr (64-bit), you could warn Debian teams not to propagate this error.

5. I have checked Console and Debugger, but they seem website-related. This error happens on every single website. Tried already troubleshooting mode, same problem. Please help us.

Simple problem; complex solution? I work between two laptops and send files from one PC to the other by email. This week I could not download the sent files on Yahoo Mail. It literally just stopped downloading. I checked my security settings, created an exception for Yahoo Mail, double checked MS Defender, but nothing seems to be blocking it that I can see. I tried to review other sources, but could not find something for this situation. Help?

woke up yesterday and suddenly my browser is largely non-functional.

When opening a file browsing window to upload or attach a file, where firefox would normally open my OS's file browser (Dolphin) it now opens a hideous firefox tab with extremely limited functionality (no file sort/ search/ open, or access to most of my system), and the Download toolbar is now completely broken. Clicking a file opens a little dialogue box that asks "Open with System Handler?" and does nothing upon clicking OK. Nothing also happens on clicking the folder icon to the right, which would normally open a Dolphin window with the file in question selected.

I'm running Linux devuan: Linux MikesPI 6.1.93 #1 SMP PREEMPT Mon Dec 8 02:37:53 CET 2025 aarch64 GNU/Linux and Firefox 140.4.0esr (aarch64).

For years now I've been downloading and saving Yahoo quotes as csv, now for the last week Firefox wants to save page image poping up an extra window that must be refused before I can continue using Firefox. Hopefully someone can tell me what new option in about:config can be turned off to stop this. Thanks, Mike

simply that except for the odd ocassion, I cannot download documetns generated by Copilot when i'm using firefox. I uninstalled Firefox and it worked on Edge but for a while and then i started having problems with that as well. For several months when i first started usin Copilot, it worked fine and then suddenly I started having problems.

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.

Youtube webpages won't load properly after saving. They start to load but then switch to a white page. I need to be able to save a video's webpage to save links and other information for later viewing. This started happening on any computer 2 or 3 months ago. I'm thinking that youtube did something that causes the saving of their webpages to be messed up. Youtube webpages display fine on youtube.com but saving their webpages doesn't work anymore.