Diễn đàn hỗ trợ Firefox

I can't find a place to control third party cookies in the Security section. I used to be able to donate on my church's website but now it doesn't work. I tried doing it with Microsoft Edge and it worked fine. I hate to erase all my history and cookies because it takes away log-in info on my regular websites. Any ideas? Thanks for your help Terri

I accidentally uninstalled firefox and need to recover passwords and bookmarks. Can this be done? I run an old dell latitude with Windows 10 and was trying to cleanup apps running in background at startup since it was running very slowly. At one point I saw 2 firefox icons. Uninstalled one and lost everything. Can you help me. Michael Evans

I have check spelling enabled in Firefox. I use Firefox in English for technical reasons, but I write most of my emails in Hungarian. I was prompted to install a dictionary addon to be able to use Hungarian spell checking. I did install that addon, however I still can not choose any other language to spell check in but English. I would like to resolve this issue. My Firefox installation is very fresh, I am leaving Chrome in favor of Firefox and would like to stay. What I would have expected is that I install Hungarian, then the spell checker automatically identifies the language pack it needs to use.

So I just noticed after downloading the new update to Firefox, version 139.0.1 that something new came up in my task manager called Crashhelper. Never seen this before. Closed it down and it seemed to have no issues shutting down at least. I haven't had Firefox crash in recent months, so I'm assuming that this cropping up might be a glitch of some kind? I looked this up to see if anyone else had this issue, and it seems someone on Reddit did encounter this, on Linux, and another on Windows also seems to have run into it. How do we stop this from coming up whenever we start up the browser?

I pay my utility bills online and the utility company websites won't load in firefox but do in edge. Also various other sites wont load with an error message captcha incorrect, but no captcha shows on the screen. It's getting frustrating waiting for websites to load and getting no results. Thank you, Ann DIngee

In firefox, an extension no longer appears in the toolbar. It used to. Therefore I can no longer log in into that extension nor can I restore it to the toolbar. My version Firefox 138.03 64-bit. The extension is Phantom version 25.16.0

After updating to version 137 today, all my bookmarks are gone. I've tried looking under "Profiles" to see if they're on another profile following the instructions from https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update; there are two profiles (default and default-release) and both have no bookmarks. I also tried following the instructions at https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks to import a backup, but Firefox finds no backups to import from and there's no "Old Firefox Data" on my desktop to restore from. Search history and recently closed tabs history are intact, so it doesn't look like Firefox has completely destroyed the profile it was using before the update, just the bookmarks. Is there anything else I should try, or should I accept that this particular library of Alexandria has burned and just begin recreating the bookmarks?

Hi, In the last hour FF has stopped working completely. I made the mistake of using Ccleaner, which is probably the problem, I haven't had issues cleaning before, though I usually check the registry before deleting and don't recall seeing any entry for Mozilla (I may be wrong, though).

Firefox was working fine a couple of hours ago, but now it won't open at all, except in admin mode and then it won't open any links or tabs, not even settings. I've uninstalled FF, deleted the folder in the Programs folder, and reinstalled it from scratch, but there is no change (the one difference is that it wouldn't open in Admin after before I reinstalled it). Waterfox doesn't open either, but Thunderbird seems to work with no problems.

Thanks, Matt

My e-mail will not load sub links. It pops up a list of links not related to the e-mail. Stated when I installed avast. Took avast off. DID NOT fix problem. What now???

Every time I try to view a pdf file on Firefox I can view the file but in the lower right 1/4 of the screen I get a graphic of a page with shaded areas representing lines with writing on them. There is a type of pen cursor moving along the line.

This happens with different pdfs - from the internet and from my saved files. This doesn't happen on another computer with Firefox.

I've deleted and redownloaded Firefox an number of times, also tried troubleshoot mode - no improvement. Virus scanned, restarted a number of times.

Pdfs work on edge and chrome and reader with no problem.

I have a screenshot.

Any Ideas? Thanks

Lately, whenever I try to open a PDF from a website open in Firefox, the tab crashes and the PDF does not open. An error stating that the Windows file-dialog has crashed is displayed at the top of the tab. I tried to attach a screenshot of the error but that action only generates another error.

This condition does not occur when I try to open the same PDF from the same website open in either Chrome or Edge, the PDF opens properly which leads me to believe the problem is in Firefox and not my Adobe installation.

Thank you

places.sqlite: this file records EVERY website I've ever visited in a db table! This despite opting out of History and flushing daily It's frustrating that FF surreptiously collects such personal info. Why record every site I visit, date-timestamps, frequency, etc.?

moz_historyvisits_dateindex ON moz_historyvisits (visit_date) moz_places_lastvisitdateindex

As test, I changed the name to places-sqlite.old to see if FF will create a new one It didn't make a new table; re-created the old one.

I need to update FF because of the expired certificates, but would like to clear these out first. Similarly, can I get rid of the icon database? My bookmarks are backed up as JSON and HTML files. I just wished they didn't contain extraneous info

Since 2 hours ago the following site has stopped working correctly in Firefox. It was loading normally in the morning(3+ hours ago) but now it does not load any maps etc. It's a weather satellite site. The site is: https://www.wetteronline.de/wetterradar?wrm=7&wrx=38.19,25.97&wrp=periodCurrentHighRes&wrf=true

It works normally in Chrome, and Opera and Edge. But not in Firefox(I have the latest update). I have cleared cache for this, I have tried everything but it does not load the maps.

Does it work for you?

In the screenshots I show the normal loading in Chrome and what it does in Firefox.

My Firefox browser has been crashing for a while now (Years). It's fine playing YouTube and BBC iPlayer but when I advance the time marker to a different part of the stream or video, it crashes. It also has a problem when playing slots. It seems to crash a lot making it impossible to play.

I have tried using Firefox in Troubleshooting Mode but the same things happen.

Here's the crash report ID

Report ID Date Submitted bp-a9b8bd6e-9258-4a25-badc-bda480250308 08/03/2025, 13:41

Many thanks in anticipation and I hope someone can help me fix these issues.

Latest update changed it so that URLs are not shown in the address bar unless a button is clicked. How to restore URLs being shown by default?

Please note: below question is similar but not the same. https://support.mozilla.org/en-US/questions/1493782

I have a bunch of profiles set up via "about:profiles". Some of these are associated with different Mozilla accounts, some are not. Today, I wanted to rearrange those profiles to put some older profiles that I do not use as often lower on the page than more recent profiles. I thought I remembered there being an overview text file that included a number for each profile, the folder that profile's information was stored in, etc. When I went looking for that file, I could not find it, so I went looking for help articles and discovered that there is a new profile management tool.

When I tried using the new profile manager via "about:profilemanager", none of my current profiles are visible, so I cannot use that tool to reorder my profiles.

I would be grateful if you could point me to an article explaining how to reorder the profiles in "about:profiles". If that is not possible, I would appreciate a help article explaining the rationale for making these two uses of the word "profile" distinct, the ways in which these profiles are different from each other, and how to transfer settings from the older version to the newer version. I have everything set up just the way I like it within my current profiles and really do not want to have to recreate them from scratch...