Firefox 技術支援討論區

I just downloaded Video DownloadHelper as an add-on to my Mozilla Firefox browser. After I finished installing it, I could not find any shortcut of any icon for me to click and use it. My purpose was to download some video clips to my desktop. I did try to click the 3-bars on the upper right corner of the menu bar to add the icon to the menu bar, but the icon was missing and I could not find it anywhere. I also checked to make sure that I have the latest version of FireFox. I did try to remove and delete Video DownloadHelper from FireFox, clear and remove all my data, cookies, history... and then defrag my hard drive, restart my desktop computer and then reinstall Video DownloadHelper. The Video DownloadHelper icon was nowhere to be found. My operating system I am using is Windows 11. There is no email, no phone number for me to contact. I hope a solution is found soon to fix and resolve that problem. Thank you very much.

I just downloaded the new Mac Ventura update, and when I opened Firefox all my previous tabs opened up, but my Toolbar completely disappeared, as in there is an empty space for it, and they show when I click on Bookmarks, but not on the actual browser window. The same thing happened with my Add-on extensions, all disappeared, and they're not even showing in my library. When I tried to download them again online, every single one gave me a red error message "An unexpected error occurred during installation." Please advise what's going on and/or how I can fix this to get my normal browser back. Thanks

Hello! New Firefox user here migrating from Chrome due to all of the Manifest V3 things coming up soon. Quick question, how can you pin multiple profiles to the taskbar? In chrome this was hassle free and pretty much one-click, so I was surprised to find no way to do it so far. Any help in resolving this issue is much appreciated!

I am using Version 113.0.2 (64-bit) and trying to access a home camera system, mydlink.com. When I go to log in there, it tells me "You are using an unsupported browse.....We recommend you use Firefox 12-51/52 ESR on Windows" Can I get this version? What options do I have? Thanks, Ed Corcoran

After installing Apple Ventura, and trouble with User Accounts, Firefox won't open, giving me the error message about not finding or having a Profile.

I did all of the suggested fixes on the Help pages, renaming files with "OLD" etc., finally deleting the entire Firefox folder in Library/Application Support, and the program still won't launch and gives me the same message about not finding a "profile."

Please advise how I can eradicate every trace of Firefox on the computer and start over; the program should create a new profile and let me use the program, but it's refusing to do so.

I recently had Firefox auto update the version of Firefox on my windows computer I have for personal use. Within 48 hours or so, Microsoft defender gave me the following notification in the image below, also mentioned in the title.

A little research has had mixed results on Reddit. Anyway, I am not directly looking for advice here on securing my device. Rather, I am wondering if there is any chance this could be a problem on the Firefox end, perhaps an issued caused by the recent update? Thanks.

Attempting to download and install browser. exe. file downloads OK. When running exe. file, it hangs halfway through, and stops. Following message appears: "Gah. Your tab just crashed" Restore tabs option fails to fix problem!

My desktop PC is using Win 10, 64 bit with 16GB RAM. Chrome browser Version 114.0.5735.110. Have cleared cache and history. Win Defender only anti-malware prog running. Have run CCleaner.

Any help much appreciated. Thank you, Geoff in Australia.

please note it seems possible that this category is specifically for download of firefox, this is not so. opting for this category given the possibility that that theory is mistaken, and due to not seeing any other category that might be more suitable

using firefox developer edition (also couldn't find an individual category for this), and when downloading any files, it saves automatically without asking where/what to name it etc., as preferred. but specifically for pdf files, it always opens them in a new tab upon completing the download; this can be very frustrating when downloading larger quantities, especially with it switching to that file tab and away from the source of downloading. firefox is not even the default for opening pdf in the first place

looked through preferences for anything (and tested anything that looks potentially relevant, to no avail), looked for a solution online from various sources and search methods, no dice

how can this be disabled?

I'm trying to download Firefox on a new computer. It downloaded the install program at least 6 times in about an hour, but it never finishes downloading. How can I avoid this and get it to actually download Firefox?

Each and every time you install an upgrade on Firefox, your profile vanishes. So I questioned on how to save my profile and I found a nasty solution where you have to close Firefox because of a stupid empty file named parent.lock which happen to be empty on the 2 cases I checked. I did not sniff in the restore constraints yet... What a mess ! Looking at the frequency the Firefox's upgrade arrives, it would be advisable to automatically preserve the user's parameters. Alternately it would be a good thing to have a save/restore function for Firefox's parameter.

My e-mail address changed, but the old one keeps popping up. I need to ELIMINATE the old one and use ONLY the new one. I've told various organizations, businesses, etc., to make the change. I want Mozilla Firefox to ELIMINATE the old one and use ONLY the new one. Help!