Diễn đàn hỗ trợ Firefox

The Firefox prefs.js file was quarantined by avast yesterday. Message indicated malware had infected the file. Now when I click on the Firefox icon the MSN browser comes up. How can I get back to using Firefox safely? Can I uninstall Firefox, then re-install it to make the problem go away?

running Firefox 98.0.1 on windows 10

I recently started using Firefox again and all my themes started zooming out/moving to the right hand side and some even duplicated multiple times across my top bar. It's most noticeable on themes that arent meant to be looped like that (see japan rain in attached photo)

is there anyway to fix this/work out what is causing it? None of my extensions modify my taskbar in anyway (photo attached) and i never changed any display settings in windows.

Thank you in advance

I seem to have gotten something called Google Ad Services. It frequently interferes with my getting to websites and I cannot find how to block it or remove it. HELP!

Certain site show what looks to be Chinese writing in the menu and description. Videos for those site will not play. This just happen today. Is there something going on with firefox? what would be the best fix?

I recently made the switch to Firefox. I attempted to use the version downloaded from the internet, which I already had installed for a long time, but it would not open. I then used the version available on the Microsoft Store, which worked fine. Eventually, Firefox crashed and would not reopen. A message saying something along the lines of "Are you sure you want to start Firefox in safe mode?" would appear for a split second, and then close. I tried:

-Starting Firefox in safe mode, but nothing happened. -Restarting my computer. -Reinstalling Firefox. -Running as administrator. -Checking it is not blocked by antivirus. -Using the profile manager to create a new profile: The .zip file version opens but does not help, and the version opened by using the "firefox.exe -P" command in Run suffers from the same problem as the browser and opens for only a split second. -Attempting to boot my computer in safe mode with networking, however, the Microsoft Store listed Firefox as uninstalled, and the network menu would not display any networks so I could not reinstall it. -Searching for any Comodo iseguard.dll files, but I found none.

The only thing that worked was searching "Mozilla" in files and deleting everything except what my computer said was part of the system. After that, I was able to open Firefox, but after a short amount of time, the problem started all over. I have no clue what to do and looking all over for solutions is driving me nuts! Please help!

Hello,

Starting Firefox 97, opening a file involves downloading it the same way as if I choose to save it. It results in both Download folder and downloads list in the browser being polluted with a million of files I only wanted to open once with a specific app (pdfs, xls, m3u etc.).

Previously Firefox was using a hidden internal folder for saving such files and deleting them later, so Open In App really meant "open, do not save locally". Now any option just means "Save the file to the Download folder and let it be there forever".

How can I fix this unsuccessful UX decision apart from downgrading to an older version?

Thank you.

P.S. "If you dislike new features in the latest version of Firefox, your first reaction might be to go back to the previous version. Rather than downgrading, try getting used to the new features..." is probably the worst suggestion you can possibly give to someone with their workflow broken by a sudden update they can't decline with a feature they never asked for.

I have to curate and compile sheets of announcements for a local humanitarian service provider forum. I do this by sifting through my Office 365 emails, and double clicking those that contain announcements so they open a window, then sorting the windows on a second screen, then read them, summarize them, file the pertinent information with links for my summaries, and when I get a page of them, send them out. I usually start with about 15 announcements on my other screen, and it takes me some time to get them all sorted and cascaded in order for the curation.

Some of them link to PDFs which Office 365 doesn't always preview and I click download, and this used to open them in the main browser window in a new tab, where I could read them and then save them. Recently, this behavior changed and they now open right in the window the email is in, with no bars of any kind or tabs to get out of them again. I hit the stack of pancakes button, and it had a tab marked Exit, so I thought that would exit me from the view.

Instead, counterintuitively, it exited me completely from FireFox, closing all of my carefully cascaded windows of announcements, and my main browser window with Office 365 in it and everything else.

Thanks a bunch. 1) What was so wrong with the previous setup that you needed to change it? 2) How for the love of whatever the author of this new "feature" was smoking, do I get it to revert to the email or is opening these attachments by "download" no longer possible without punting the whole thing to exit? 3) Does this mean I need to permanently disallow Firefox as the browser for all my PDFs or is there some way of doing something non-fatal to my work on a per-boot basis?

Why, with not very many active open windows, and just after opening, is FF using 175% of my CPU, not counting all the separate listings in my Activity Monitor. Plus it's using nearly all 16 GBs of my RAM. With every new update, I pray it will mean the browser will just work, and not use up all my computer's resources, but it just never does. Pretty soon, more & more of us will just give up on this browser, which used to work better, years ago, and has only gone downhill since.

On Microsoft Edge, whenever i type the first letter of a word it will suggest automatically the recent words that i have use. How to enable it on Firefox, i already browse the settings? I really need it on my job specially doing reports. We can only use Firefox to access our websites.

The Motherboard on my Windows 7 gave up, however the SSD that it was on is still working properly.

I have seen it on an alternative Windows 7 computer.

I specifically wish to recover the the Bookmarks that is on the Mozilla Firefox browser, and also all of my emails on Mozilla Thunderbird.

I would be most grateful, if someone can please tell me how this can be done?

When I open Facebook with Firefox all of the images in the FB session are blank, and they will not open in the usual manner. Also only about 1/4 of the FB session is displayed.

When I use Edge I have no problems at all, so I have to assume that it is FF and not my computer that is at fault.
Please advise.
Bob Burns

The behavior of FireFox saving PDF files has changed. I am using WIN10, FireFox 98.0.1 and have it setup to use windows default application and always ask where to save for PDFs.

BEFORE the problem: The PDF opens in Acrobat Pro IX. After clicking save I would be asked, where to save. I select the location to save the PDF. Then after this, subsequent PDFs downloaded would be saved to the last saved location. This process would repeat for a new website PDF load and save. This is the behavior I want now.

NOW with the problem: The PDF opens in Acrobat Pro IX. 1. Immediately, after a reboot, the save icon on Adobe is grayed out. I select save as and point to the desired directory. 2. For any subsequent PDF opened, the Adobe save icon is available. Files are saved to the desktop.

Please note I believe I once did get a popup asking where to save and I know I selected desktop.  Since that selection I am no longer asked where to save.

Please note I have looked and tried some of the suggestions at: https://support.mozilla.org/en-US/kb/cant-download-or-save-files#w_choose-a-different-download-folder

but some of this advice needs to be updated for the new FireFox version--ex no JSON file is found at the file location covered in the advice.

I believe this issue started after the last FireFox update. Please help me restore behavior listed above under “BEFORE the problem”. Thanks.

Currently I must sign on to Frontline Education to see if there are any new substitute teaching job offers available 24/7. I would like to receive audible notifications on my Macbook Pro or Apple ipad or Apple iphone to alert me to a new job offer so that I can then go to my device and look at the job offer. Thank you. John Marshall

Hi, I wonder if someone can help me log into the KeyBank website. I keep getting this message: "Due to technical concerns, your current version of Firefox is no longer an option for KeyBank online banking. Nothing is wrong with your account. You simply need an updated browser – like the most up-to-date version of Microsoft Edge, Google Chrome, or Mozilla Firefox – to sign on to online banking." My Mac indicates I have an up-to-date version of Firefox (78.10.0esr (64-bit) Thank you

When I try to download a file, the download always fails. This happens no matter what website I'm downloading the file from (see screenshot 1).

This started happening within the last week or so. We are running versions 97 and above.

Firefox is configured to always ask where to save files to (see screenshot 2).

Write permissions to the user's Downloads folder is denied for reasons unrelated to this issue (see screenshot 3). When I re-enable write permissions, the problem goes away.

Has anyone else run into this problem? Is write access to the Downloads folder required now, even if Firefox is not configured to save files to that location? Thanks!

The root problem is that when I try to open a movie in a web browser, I get the message "Oops. Your web browser is no longer supported. " see attached.

1370719 had a response that made no sense to me.

Is there anyway to fix this issue?

David