Firefox 社群討論區

The update to v145 completely changed how background color and highlighting of HTML emails are displayed. It was nicer before. Can someone please share which setting in about:config to change to return to HTML display in previous versions?

Thanks!

When a PDF has been edited and needs to be saved again, the save dialog does not show the location of the current PDF, but rather the location where the last PDF was saved. I couldn't find a way to change this!

I already had two separate "old style" profiles, for personal and work browsing. I just created a new profile (from my "old" personal profile) using the new Profile Manager. I managed to import data from my "old" work profile to the new one. In this process, I ended up creating two new work profiles (with different names). Now, I simply cannot delete one of them. Clicking on the delete icon on the profile manager opens the new profile, and I understood I should see a confirmation dialog corresponding to the "about:deleteprofile" URL, but nothing is shown on this case. Also, this new browser instance doesn't show any profile management menu items.

I tried manually removing the profile directory on ~/.mozilla/firefox hoping Firefox would understand it is gone and would automatically get rid of it, but instead it automatically creates a new empty profile on the same directory, and also unmanageable and undeletable.

So, if someone could please tell me how I can get rid of this new bogus profile, I'd be very thankful.

BTW this whole "new" profiles is a cool idea, but IMHO it was launched in a premature state. They are prettier, indeed, but besides the above annoying bug, there are no CLI args to switch directly to a "new" profile or open the new profile manager. This makes it impossible to use apps like Junction which allows you to choose a browser when you try to open a link (which worked just fine with the "old" profiles)

Hi, after the last update I got this message that resides above my browser window:

The security sandbox is disabled. Your configuration is unsupported and less secure

I'm on Windows 11.

I am running Firefox 145.0 on a Windows 10 desktop PC. Even though I am using an external Password Manager (DualSafe Password Manager), Firefox keeps asking to save passwords. When I look at the privacy & Security section in Settings, Ask to save passowrds is ticked and also greyed out. To access the setting, I have to disable DualSafe. The setting becomes accessible and unticked. I then re-enable DualSafe. If I then close Firefox, the setting is re-ticked and greyed out when I start Firefox again. Can anyone suggest how I can fix this?

The PW I am using to attempt to sync firefox to my new windows computer is in the active firefox that I currently use. I have checked it in my desktop version and also on my ipad and the PW in both are the same yet when i try to sync the new computer and put the PW in that is in both my desktop and iPad; I get msg it is wrong PW. So then I tried to get a new recovery code (can't find old one) it asks me for the PW and again; get msg it's wrong. How can it be wrong if it's the one in my current firefox that I am typing this on right now? Doesn't make any sense to me! How can the current PW in the active firefox account be incorrect when I try to sync my new computer? (I have double/tripled/quadrupled and even copied the current PW from the PW list in firefox!)

thx

Ive been receiving server failure reports from several links at numerous websites including zillow and carvana. Links that I try to open from Mozilla Thunderbird, receive the error or show only a blank page. Is there an issue with Firebird or Thunderbird at this time?

Hello Since last update (145), I'm experiencing an issue where Firefox becomes unable to access the internet following a temporary loss of connection during the normal use, until I completely quit and reopen the browser.

I'd appreciate any advice on how to resolve this.

Thanks

I am having problems navigating using Voice Control which I believe was previously called Voice Over, which allows me to control and type with my voice. It works on Safari however on the Firefox desktop app it is completely broken and I cannot give any commands and typing text doesn't work on some website such as ChatGPT.

I found an old article explaining the support has been added however I don't understand why I can't use Voice Over at all on my Mac.

Any help or advice would be greatly appreciated.

I use the default setting that all cookies be deleted when I shut down Firefox, and then hand-input dozens of exceptions. The Firefox update on November 11, 2025 -- and I didn't even click on install, I only downloaded it, then hesitated, being afraid that it costs me again hours to re-create what the update destroys, but Firefox went from download to automatic installation -- meant that Firefox wiped all cookie exceptions (list of cookies that are not deleted when I shut down Firefox). These exceptions are hours of work, and, additionally, every bank etc. now requires me to sign in and go through many-factor authentication anew. -- How do I restore the long list of cookie exceptions that the Firefox update just deleted?

+ The same update wiped all bookmark icons. My three dozen bookmarks in the bookmark toolbar now come with the 'globe' symbol rather than the bookmark-specific symbol, so I can't tell which bookmark is which. How do I restore the bookmark symbols that the Firefox update just destroyed?

When I approved the installation of the latest Foxfire update this morning, I got the message "Couldn't load XPCOM." Another popup message included "error status 0xc000012f." Firefox does not work. Thanks, Joan Karrie

Get screen message: Making sure it's you.Please sign in to login.microsoft.com. This request comes from firefox. published by Mozilla. Insert your security key into the USB port. I don't have a security key for USB port. Can't access my email for messeges.

I got a random pop up on Firefox that I clicked without fully reading it, which closed Firefox and then prompted me for the administrator password (aka the password of that account on my laptop) so Firefox can install a helper tool. I did, and it did nothing. Every time I try to open Firefox I get the same pop up prompt and no matter how many times I give the password nothing happens, and I can't open the application. Clicking cancel on the prompt also does nothing.

I logged onto a different account on my laptop and can use Firefox like normal, but none of my settings/bookmarks/passwords from my other Mac account are saved here.

I would just delete and reinstall Firefox on the administrator account that is having this issue, but I don't know if I have anything properly backed up on Firefox, and I have a ton of things saved on there that I really don't want to lose. What do I do? Please help :(

Last screenshot is what happens when I try to launch Firefox and enter the password when the install helper prompt pops up

I am trying to pull up the list of the subscriptions and auto payments I have on Paypal. All the other pages on the site display correctly. Microsoft Edge displays the page correctly.

I have attached two screenshots, the first is how Firefox shows it. the second is the correct display using Microsoft Edge.

Note the correct page shows a lot of offers on the right side with the list of payments icons on the left in proper form. The incorrect screenshot does not show the right side offer material at all . The layout of the text and icons are nothing like they should be.

Changing the magnification does not help as my other Paypal pages are affected and the result is just a smaller version of the incorrect page with the icons still offset and is not usable for it's intended purpose.. Also the text is to small to read.

When I first try to open the page it flashes momentarily on the correct view, then immediately goes to the bad view. Is it possible there is some "locking" factor missing when I get the flash display?

This started within the last 6 months. I suspect something about the page is not on the same criteria as Firefox. If no one else has seen this then I must have something inconsistent with that page.

Hello. Firstly I have NO troubles accessing the internet via Firefox (my Default browser). My problem is that none of my "saved" websites (including those appearing on the Bookmarks Toolbar) will open on the internet when I click on them. If I type the internet address into the address bar, the site opens as normal. I do not have this problem if I use Chrome. The problem only commenced today following an update by Norton via Norton 360. I have attempted all the suggestions that Norton have supplied other than re-installing Firefox - and none of their suggestions have solved my predicament. Any assistance would be gratefully appreciated to fix this most annoying problem. Thank you, Ron.

I use the same laptop at two locations. I have different printers at each (both HP, one a laser the other an inkjet).

Most of my time is at location 1. Typically I can print without a problem. Recently in Firefox ONLY I have been unable to print at location 2.

Scenario:

1. I print to the laser printer at location 1. No problem.
2. I go to location 2 and choose to print - the print dialog appears with a "spinner" and it does not go away.

I have to cancel using Esc. I am unable to print at all from Firefox. Typically if I close Firefox after that, it looks closes but is still shown as running in Task Manager.

Other programs such as Word and other browsers bring up a dialog box showing that "the printer cannot be contacted" and allows cancellation. At this point I can choose the local inkjet printer and all is well.

HELP!!!!

Mal Lowe

How long do tab groups stay in the browser? The tab groups I create disappear from 'list all tabs' dropdown. I was unaware there was a time limit. Could you let me know if I am doing something wrong here or change the description to include a timeframe. Saying that I can reopen suggests I can always reopen (see help article quoted below). "You can Save and close group, which will save and close the group for you to be able to re-open from the List all tabs tab icon 2 icon on the tab bar (or the Fx137ListAllTabs toolbar icon, if you use vertical tabs). "

I have lost a number of groups, which is not ideal. I see two tab groups from last four days but no others. See screenshots.

Would love clarification of this, as it is so useful to keep sites in groups for later use.

Thnks