Firefox Support Forum

I recently switch to Firefox and I'm enjoying it so far. One problem though, continuously using Firefox over a long period of time cause it to use more memory than normal. I assumed it was because of the large amount of tabs i kept opened but even when i had closed most of them, the problem still persist. This lead to worse performance and more frequent crashes. One way I found to have helped is to close and reopen Firefox, but the fix is only temporally.

Hi,

I'm trying to configure equipment on my local network. Some of the equipment does NOT support https. Firefox continuously changes the address http://192.168.xxx.xxx to https://192.168.xxx.xxx, and the connection fails!

I have tried the various options in HTTP Only Mode, including entering Exceptions. I have also temporarily changed network.trr.mode from 5 to 1 (and 0), but nothing is working!

What can I do?

Thanking you Pedro

Network Protocol Error

An error occurred during a connection to www.facebook.com.

The page you are trying to view cannot be shown because an error in the network protocol was detected.

   Please contact the website owners to inform them of this problem. I get this often

When I switch from one tab to another doesn't matter the webpage the page adjusts the content on the tab. For example I was on youtube and switched over to gmail and it adjusted the screen and when I switched back to youtube it did the same on youtube. I wasn't zoomed in or anything. I was just on the tab and it was fine and looked how it should but as soon as I switch to another tab it does it on that tab and then will do it again when I switch back to the tab I was on originally on. I'm on FF vers 113.0.2 (64-bit).

I have one Firefox profile with work and personal stuff, and am creating another profile just for work. I have exported the passwords from the first profile and deleted all my personal ones, so the Excel file just have personal passwords. I am looking for a way to import this file into my new Firefox profile. I see how to do that from another browser, but not from a file or another Firefox profile. Any help would be appreciated.

Hello team, hope you're doing well. I purchased a new laptop recently(HP Omen 16 with RTX 3070Ti). I installed Kali OS via VMware, which runs on my host machine(Windows 11).

Everything seems to be working fine in Kali, except when I try to play any video via Firefox Browser, it lags a lot and is very choppy. At first, I thought it was the issue with Kali hence, I reinstalled Kali and tried again. The issue still persists. I then did a clean Windows 11 install and tried everything again right after Win11 was set up, but I still couldn't find a solution. Tried all the methods which I could find online, but still, nothing worked.

I tried again, but this time with Windows 10 Pro on VMware. The issue was resolved and everything worked perfectly fine when videos were played on Microsoft Edge.

I've installed the Firefox browser on my host machine, and everything runs smoothly on my host machine(Windows 11), but the issue occurs only when videos are being played in the Firefox browser via Kali on Vmware/VirtualBox. I had asked many known people, but none of them have ever faced this issue with Firefox to date. Neither did I with my previous laptops. This is the first time something like this has occurred.

Issue: Any Video, from any site, when being played in Firefox Browser via Kali OS in Vmware/VirtualBox lags a lot and it is super slow(even when the video speed is set to normal). The audio that comes out from each video is like a robotic voice and it is super slow and laggy.

Kindly help and I really hope that we can resolve this issue!!!

For over a year when i go to download something it defaults to the downloads folder instead of asking me where I wasnt to download. I'm about fed up with FF. it's been a great 10 years but this issue along with 80% of my sites not loading or working will lead to me jumping ship. Please help!

I use the closed captions (CC) in YouTube videos with FireFox. Lately I have been seeing videos that seem to misbehave. At the very start of the video, ALL the captions display at once, one after the other. Then, as play continues there are no more captions. Most videos still show captions normally, that is, captions appearing only when the dialog matches them. But a few videos misbehave by showing all the captions at once. Here is one such video.

https://www.youtube.com/watch?v=ZgqJ5wQF944

I noticed this misbehavior within the last month and assumed that the video was doing something peculiar with the timing of the captions. But when I use the YouTube Show Transcript option to display the captions and associated timing outside the video, the transcript looks quite reasonable.

One further oddity, if I take that same URL and load the video in a different browser, for example, Chrome, the captions are displayed normally.

I've included a screen shot of the video in YouTube showing all the captions displaying at once.

Starting with Firefox 113 (on Debian Linux), every few days Yahoo mail stops working properly: I can read emails but hitting any action of them, like Reply, Move, Delete, does nothing at all.

I need to clear cookies to get this operational again. This doesn't happen on chrome on the same computer.

The only add on I have is an adblocker, disabled for yahoo mail. This problem also happens with enhanced tracker protection turned off.

Hi all ,

i have one website which downloads the content (image/video/html) and save in localStorage also i have service worker who fetches those files.

while downloading the files from one url lets assume ( download.files.com) firefox downloads correctly , but when my service worker tries to fetch the html file from its own url ( url/content/files/downloadedHtml.html) its gives  404 not found , but when i open same url ( url/content/files/downloadedHtml.html) in second tab its giving 200OK. 

also in network tab it gives me "NS_BINDING_ERROR" .

I have been using Firefox 52.9.0, and I know it is outdated but it still synced until a few days ago at least. Then the other day I updated my password to strengthen security. After that, I am unable to sync anymore. Is there a way to fix it? I need to continue to use Firefox 52.9.0. Please note that I do not need to be told about security issues as I am aware of them well enough.

I get the following message when I try to make Firefox to sync:

> Blocked by Content Security Policy

> This page has a content security policy that prevents it from being loaded in this way.

> Firefox prevented this page from loading in this way because the page has a content security policy > that disallows it.

Thank you.

On the landing page for youtube, I used to be able to right mouse click on a video thumbnail and select "open image in a new tab" from the context menu and see the thumbnail in a new tab window.

After recent updates, (now using 111.0.1 64bit , on windows 10 pro), this feature no longer exists. It's not a change on youtube because the thumbnail is still recognized as an image and can be opened in a new tab when I use Edge browser. It seems like Firefox no longer recognizes the thumbnail as an image.

Is there any setting I can change to get the feature of "open image in new tab" back into the context menu. or somehow get Firefox to recognize the thumbnail as an image ?

Hi there! My Website layout not properly show in Firefox browser as shown on other browsers like chrome, apple browser and others. page width shows to short. Is that browser issue or my website? Note: I used some WP plugins in my website.

Hello:

I have 2 profiles in use. 1 for personal use with their respective bookmarks, passwords, and extensions, and I have no trouble syncing with this one. However; profile 2 that is for work use that has its respective bookmarks, passwords and extensions, has become a nightmare.

It happens that I have both profiles on the same computer and when trying to create an account in Firefox, the system asks me to enter the email registered in profile 1, with the warning that bookmarks, passwords and extensions will be mixed.

I mention that I have migrated from Google Chorme to Firefox for speed reasons and because I use windows 7 (I don't like later versions) Now well; in Google Chrome you could create as many sessions as were registered but in Firefox you can't.

Oh! I have been working fine with Firefox but suddenly an error occurs (it has happened to me 2 times in the last 2 months) in which the program closes and all the data of my profiles stored on the pc DISAPPEARS or is deleted (including cache), when I want to open them again:

firefox.exe -P

Then I have to give myself the task of synchronizing profile 1, but profile 2 I have to be importing from my previous Google account or importing a backup Bookmark.

The option to copy and paste the data from Firefox to replace it in the path (supposedly brings with it the data of everything):

C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\updates\308046B0AF4A39CB

with Firefox turned off it has not worked for me. Since when opening I see 2 profiles called Default "X" and Default "Z" without data.

This is a headache that if it happens to me, it happens to millions who have 2 or more profiles.

Why can't I sync a second profile? Why do you insist that there can only be one sync per device? Is there a solution for this?

Note: I have read all the tutorials out there and the situation remains the same. Synchronization with 2 or more profiles is never described.

Thank you very much to whoever asked this question!

I installed Firefox at work and set my personal email address as secondary to my business address. Well, I liked Firefox so much that I decided to use it at work and at home - and I removed my personal email from my business account. Unfortunately Firefox is still recognizing my personal email as the secondary address for my business account and I am completely incapable of making a new account. My bookmarks and saved passwords are all different between home and work. I NEED two individual accounts, just like how I was using my browsers with Chrome. t

This has happened twice. All my passwords were removed from the Fire Fox PW Manager. The first time, Google ended up with apparently this PW list created w/FF. I never knowingly gave permission for this. Second time my Primary PW will no longer work and I had entered the PW correctly.

Tried to set up a new PW file on FF, which I had since upgraded, but it will not accept my "last PW".

Please see changed email.

nearly all page wont load, it just spins. sometimes after a couple of refreshes the page will come up instantly. this happens to 80 percent of pages. I have reset, but didnt help.

Why am I suddenly getting notifications with a tone appearing in the upper right corner of my screen from various entities like supermarkets, NextDoor, etc? This just started happening.