Firefox 社群討論區

Using the Firefox 151.0 Mozilla Firefox for Fedora. Updated as of 23 May 2026, I use just a generic FireFox. I don't customize it, I just use it as it comes from the Fedora distribution.

I cannot save images (right click menu "Save Image As"). Nothing happens when that is selected. This worked a couple weeks ago.

Downloads are supposed to go to ~/Downloads. Checking the setting for this, Go to the three-line menu > Settings > General > Files and Applications, under Downloads, the "Save files to" value is set to Downloads, but the Browse button does not work to reset it. Nothing happens when I poke on the button. I can select the text in the box, but I can't change it.

I found the help page for "What to do if you can't download or save files https://support.mozilla.org/en-US/kb/cant-download-or-save-files and went thru every one of the steps there. None of them make any difference.

Strangely enough, there isn't even a "Downloads button" in the top toolbar. If I right click on the top toolbar and select "Customize Toolbar" it shows a downloads icon as already being in the toolbar, but when I click Done, it goes away.

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.

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.

thorsak Today at 12:21 PM

thorsak 2/23/25, 2:49 PM

February 23, 2025

Hi: I've just recently installed 135.0.1 Mozilla Browser and have found that the file SAVING-function in the 'Application Menu' does NOT PROPERLY WORK: it records my message-title but NOT the contents (0-bytes!) -I never had such a basic issue in many years of very satisfactory Browser-use ...am I have a wrong setting somewhere and is there any quick fix please ...? - Email me when someone answers the thread ...MANY THANKS, Tony H.

P.S.: Please send me a link where I'd get a help since I'm NOT GETTING ANY HELP FOR SEVERAL WEEKS ...! Thanks-Tony H.

I'd been trying to download 2 large files from Icann and kept getting premature completion with Firefox. It would be showing ##MB of 356MB downloaded for a few seconds and then out of the blues it just says completed. As you can see in the shared video, I've tried this several times.

I thought that maybe one of the Firefox addons was causing the issue so I tried Troubleshoot Mode but that resulted in the same behavior.

I then went into Firefox Profile Manager and created a new profile. But that too had the same behavior - 🤔!

So I then tried Chromium. It completed the download successfully and the file passed gunzip test.

So, why is Firefox, even with a new profile, failing to complete a download?

See this video: https://youtu.be/UCYQtxljqXs

I have recently encountered reproducible failures when attempting to download files or save pages to local storage. The target directory is located on a mounted NTFS file system with the options umask=007, user=root, and group=disk. My Firefox browser is running under a non-root user account that is a member of the disk group. However, I consistently receive the error message: “XXX could not be saved because the source file could not be read.”

I would greatly appreciate anyone's assistance in resolving this issue.

Today I upgraded to v157 and since then can't download files properly. I thought it wasn't doing anything, but on checking my Downloads folder found that it was saving files in there but with random file names and adding .part to the end. My settings haven't changed, "always ask" is checked, but it doesn't ask me where to save, just puts it in Downloads. This has never happened before. I tried changing the file download location and it downloaded to the specified folder but still without asking). I can remove the .part and the file will open, but I don't know how to stop it doing this. I never had this problem before upgrading to 157. Can someone tell me how to fix this or is it a glitch in v157? Many thanks

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?

Trying to download 3.3 GB file. Around 500-600 MB download then fails and displays either, "pause" (permanent) or "failed - cachefly.net". Have tried several times over several days w/o success.

Just upgraded to Mac OS 27.0.1. I'm running DuckDuckGo as my Search Engine. Since the upgrade, I can't download files/PDFs from websites, as before. Any thoughts? Thanks!

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 trying to "Save" after pro-cococut finishes downloading a file that is larger than 1 Gig and I can't find out what to do in order to have it save large files.

Hello. I have a question regarding a problem with exporting files in Firefox. For about four days now, when I try to export files in Firefox, it fails. I've looked into it, but haven't been able to find a solution. Could you please give me some advice? I've tried various things within my capabilities, but nothing has worked. Firefox 150.0.1 64bit

I cannot download anything from any website when browsing on Firefox. My decision is therefore whether to download an older version of Firefox or use Safari just for downloading files, which means creating new links on Safari for all emails and other websites that I download from. This problem is since the update to Firefox 157.0 which has been several days now so seems to be permanent. Will this bug be fixed?

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.

I access google drive through Mozilla Firefox and also zip file or other file download but since 1 to 2 weeks i faced issue to download files especially js file.How can I solve this?

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

On Windows 11 24H2, Firefox 145.0.2, I click file link and select "Save as" on Firefox file open dialog, firefox display "Windows's file dialog was crashed. File will saved as C:\Users\xxx\Downloads\xxxxxxxx.xxx". And downloaded file size is 0. This occurs with any file.

I tryed same operation on troubleshooting mode, and same result. Please tell me the solution.