Firefox 社群討論區

I have a problem. Whenever I use built-in VPN everything on my browser just slows up. Some apps don't even open properly. How to fix this problem? I thought it maybe one of locstions of VPN, but I tried many and nothing changed. Thnaks for Your help

When I save the bookmarks to the toolbar they work fine but when I close and reopen firefox they bookmarks don't work. They are there but inactive and do not work. How do I save bookmarks so they open everytime I open firefox?

I get the window shown in the attached image when I launch Firefox now that I have updated from the ESR 140 versions to the ESR 153 versions.

If I click OK, it takes me into Firefox but it appears that the settings in my auto config are not being set suggesting that the configuration file that cannot be read is the firefox.cfg file that the instructions for auto configure (https://mzl.la/3pb4w0I) tell one to create with all the settings. It appears that the autoconfig.js file that is in "C:\Program Files\Mozilla Firefox\defaults\pref" is being read correctly as the two settings show properly in about:config.

I have set the specs on autoconfig.js to have be:

• end of line as LF and not the Windows/DOS standard of CRLF,
• the text encoded in UTF-8, and
• I have tried with BOM and non-BOM.

I have also tried these specs on the firefox.cfg file even though the the auto configure instructions do not say what specs to use on that file.

As I mentioned, things worked fine while I was using Firefox ESR 140.x, where x could be completion of any of the valid version numbers. Now that I have upgraded to Firefox ESR 153.x, this problem seems to have surfaced.

From the auto configure instructions, firefox.cfg is to be placed in "C:\Program Files\Mozilla Firefox", however, in doing a web search, I came across and article on LinkedIn (https://www.linkedin.com/pulse/2023fix-firefox-failed-read-configuration-file-error-andrew-m) from about three years ago that indicates firefox.cfg is to be in the same directory as autoconfig.js. Given it worked as described in the auto configure instructions before ESR 153, I figured this was wrong but tested it anyway by moving the firefox.cfg file. It changed nothing.

This is a problem for all my users on each of their individual domain accounts. I have tested and it makes no difference whether I'm running it on a Win10 or a Win11 computer.

I am using auto config for those settings that cannot be changed through Group Policy.

Hello,

I’m the developer of SnakeGame.Live , a browser-based multiplayer snake game with mouse steering on desktop.

I would like to understand the difference between Firefox’s F11 fullscreen mode and fullscreen activated through a website’s Fullscreen API.

For a mouse-controlled game, do these modes behave differently when the pointer reaches the top edge of the screen? Is there a recommended way to let players use fullscreen while keeping Firefox’s normal exit controls available?

I’m using Windows 10. I would appreciate guidance on the expected Firefox behavior and any relevant support documentation.

Thank you.

Hi,

I’m having an issue while using a web proxy service in Firefox. I’m trying to access Croxyproxy Croxyproxy, but I’m not sure whether the problem is related to Firefox settings, cookies, JavaScript, or Tracking Protection.

Has anyone experienced similar issues when using Croxyproxy with Firefox? Are there any Firefox settings I should check to make sure the website works correctly?

Thanks for your help.

I'm talking about Firefox version 156.0 (64-bit)??? So since the last Windows 10 security update Firefox just wouldn't start anymore. I had two or three automatic refreshments of Firefox but even that didn't do the trick anymore in the end. Then there was a secundary Windows 10 update and I got everything running smoothly again for two days, and now today there was a Firefox update and the whole trouble started again. Even some sites wouldn't work anymore (outlook, DeepL) or I couldn't login anymore. I'll try going back to a previous version ...

Help! All of my bookmarks, browsing history, and profile prior to Sept 4, 2026 have been erased. Firefox instructions for restoring these prior bookmarks do not work. When I access "manage bookmarks" then the "Library", then "import & backup & restore", there is nothing listed prior to Sept 4, 2026. So there is no file to choose. Also my prior profile has been erased. My profile is completely blank altho I did NOT create a new profile nor did I access my profile in any way!!!

Also the instructions for "restore bookmarks from backup" do not work either. I desperately need that browsing history and those bookmarks. I am doing research for an art history project & those bookmarks for the last two years were stored there & seemed securely in place for the last three years. I need those bookmarks & the browsing history which included sites I used but did not necessarily cite in my research.

My bookmarks included the sole documentation I had of my research for this project for the last two years!!! When Firefox said it would continue to support Windows 10, I had no reason to believe my entire browsing history and/or my previously secure bookmarks would be erased. Help me restore those bookmarks. dona bretherick

Since the last update 155.01 I can't use Firefox as it freezes and hangs after 3 - 10 seconds. On Windows 10 , 64 bit. There seems a bug with the last update for Windows 10 users

Crash report: https://crash-stats.mozilla.org/report/index/c0455e29-69e9-4030-8b03-fdf430260909

Not sure the crash report is related to the issue.

The same issue happens to all of my 3 Windows 10 PCs since the update from today.

I have uninstalled Firefox and downloaded again, but same issue happens again.

I cleared the cache also but to no avail

How can I use Firefox again?

Hi, Something updated, I see things are different since the last restart I have a message that says "One or more installed add-ons cannot be verified and have been disabled."

There's is a Learn more button, but it just opens about:addons, and there's nothing else to learn.

Whatever addons have been disabled, at lost in the sea of disabled addons.

There is no way to sort addons by their last disabled/last enabled date Sort by installation date Sort by Last Verified (including failed to verified Sort by last update date, sort by developer name, sort by creation date, sort by version number, sort by ... you get the gist !

Eventually I'll figure out what is missing, it will be a fun surprise, like a easter egg for bugs !

Since 09sep2026, the "Currently" news area layout no longer displays text next to each photo. Instead there are vertical boxes with photos, then a short column with a few games, etc. boxes, then the right half of the page is blank. I have AT&T fiber internet service, which pushes "Currently". I have not changed any settings. I am still on Win 10, with an HP display. I have done all available updates to Win 10. Thank you for your assistance!