Diễn đàn hỗ trợ Firefox

Hi! I was wondering why nearly every single page these days opens to the message :

"400 Bad Request Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit. Apache Server at canvas.instructure.com Port 80"

Nearly every link I click on a website refuses to open! It has become impossible to do school work on this browser because I can't open any link on my school website, and nearly every website struggles to open except from google. I know the links work because I copy/paste them into Google Chrome and they open immediately. Truth be told I prefer Firefox and would much rather keep using this browser! I also can't find an update for Firefox so I believe my Browser is up to date (and I know my laptop is up to date and virus free). Is there a fix coming soon? Or a setting I can change to be able to open links? Classes start this week and I'm stuck!

Thanks for your help!

firefox is not prompting the primary password login dialog box and not even providing me "saved login"

Even when i tried to open password in settings so that i can manually copy paste them, it ask me to log in first as shown in picture but when i click on login, nothing happens, it does prompt primary password login dialog box.

as shown in picture below, even if i click login, it just does not work.

p.s tried clearing cash and cookies.

I was having trouble switching and logging out of Twitter so I thought I could just clear site cookies to make it work, but I weirdly discovered "about:preferences -> Manage Data -> Remove Selected / Remove All Shown" has no effect. i.e. after clearing, when I open up manage data again, they are still there. I did not try "Clear Data" above it because I was afraid of clearing out all my logins.

I reinstalled my computer several weeks ago and current profile was directly copied from my last machine, so this might be a possible cause? Could someone be so kind to help me get remove cookies and hopefully twitter back to work? Thank you in advance.

For a few weeks now, Firefox has been often freezing a webpage for 5-10 seconds during browsing. It mostly happens when going back to the previous page, but also when clicking a link or doing a google search. For those 10 seconds, you can't do anything on the page; no clicking other links or selecting text.

I've already tried: - troubleshoot mode; it still happens when all extensions are turned off - turning on/off hardware acceleration - creating new places databes - updating to the newest version

What can i do to fix this?

This was my fix for scrolling not working when hardware acceleration enabled. Upgraded this software product: X-Mouse Button Control (of Highresolution Enterprises) to latest release 2.20.5

117.0.1 Mozilla Firefox Snap for Ubuntu installed Total Adblock installed Enter URL "my.yahoo.com", the "My Portfolio" page comes up, the portfolio box presents a message: "Oops, something went wrong. Please try again." I went to Settings, Manage Exceptions, entered "https://my.yahoo.com" and clicked Add Exception. "https://my.yahoo.com" it appeared in the Website listing below. I clicked Save Changes. I retried the My.Yahoo tab again and the same error resulted. Where do I need to change what preferences, Yahoo or Total Adblock?

I am unable to login to my Prescription provider's website (which I do every day). Problem started Sunday and still persists.

I am able to login using Chrome, so I know the website is working properly.

Help - I DO NOT want to use Chrome.

TL;DR: Moved firefox browsers, didnt properly export passwords, uninstalled other browser, had logins.json from profile folder, needed to know how to import manually.

Fixed. I just installed the older browser, and properly exported the passwords this time.

Past experience. With just a few tabs open there was a "+" button at the right hand end of the tab bar for a new tab. When the number of tabs got too many (in my case 18) the "+" button was JOINED by a ">" button to be able to see tabs off the right hand end of the toolbar, but still use the new tab button.

Post update to the current version of Firefox, at the point the ">" button appears it is REPLACING the "+" button.

I know there are workarounds, but my "rut" is to use the "+" to get a new tab.

Is there any way of getting it back?

Hello Firefox Community,

I've been a long-time fan of Firefox's bookmarks management system, but over the past year, I've encountered a persistent issue that's affecting my productivity. I regularly use the bookmark bar and organize my bookmarks into folders. However, any changes I make don't seem to stick and get reset after a period of time. This is especially frustrating as I heavily rely on bookmarks to keep my browsing organized. Problem Details

Here's what typically happens:

1. I add a bookmark to a specific folder or position, either in the general list of bookmarks or on the bookmark toolbar.
2. Sometime later, that bookmark leaves its designated position and moves to the bottom of the unsorted list of bookmarks.

Devices and Operating Systems

• MacBook M1 2020 running macOS Monterey
• Dell Alienware 17 r5 running Windows 10

Both devices have the latest version of Firefox installed, and I use Firefox Sync to keep my bookmarks and settings consistent across these devices. Suspicion

I suspect that this issue occurs when I make a change to bookmarks on one computer and then open Firefox on the other computer. The bookmarks seem to reset, possibly due to some issue with Firefox Sync.

Looking forward to hearing your thoughts and possible solutions!

Kind regards,

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I'm having issues with the cursor when opening a new tab and I've tried a few different fixes and none are really working.

When I open a new tab the cursor goes immediately to the start of the homepage URL which is not helpful as if I type it just retains the URL after what I've typing(See Image). I've tried playing around with about:config to get the cursor to populate into the google search bar on the browser home screen but, it doesn't work.

I've also tried setting the new tab page to blank but, then sometimes it doesn't search google even though it says it should and says URL unrecognised(see the other images).

Why is this happening, I just want to be able to not have to manually delete the URL to search using the search bar and this seems like really basic functionality to me.

Hello!

I recently got a new computer with Windows 11 freshly installed. I downloaded Firefox, went to take a screenshot, and the usual shortcut of Ctrl + Shift + S does not work. I can right click and Take a Screenshot, and I can use other Ctrl + Shift shortcuts, like Ctrl + Shift + T to reopen closed tabs. The only one that doesn't work is screenshots. I can also put Screenshots in my top row Toolbar and use it, just not the keyboard shortcut.

I refreshed Firefox, uninstalled and reinstalled Firefox, as well as checked the about:config extensions.screenshots.disabled preference. It has been set to false, so I have set it to true and false again hoping it would "reset" it but nothing. Thank you!

Have had this problem for a couple of years now, across dozens of Firefox updates. Decided to finally make a post since have not been able to find anything online.

Normally not too much of an issue as I can edit on a different computer through Firefox Sync (or through the Bookmarks manager), just posting to see if anyone else has seen this before.

If I open a Bookmarks Toolbar folder, then right-click a bookmark to edit it, the contextual menu appears behind the open folder dropdown menu.

Issue persists even if I reset Firefox, or even completely uninstall / remove ALL its bits and pieces, reboot, and do a clean install.

Since I am on a Mac, I use the AppCleaner app from FreeMacSoft to completely remove an app.

This happens only on one of my two Macs. Have never seen this behavior on any other Mac (I work on dozens for work). Both my Macs also have Win 10 installs through BootCamp and those two also behave normally. I use Firefox Sync across 4 Firefox installs (2 Mac OS and 2 Win 10), an iPhone, and an iPad.

Screenshot enclosed below. Feel free to ask for any other info you may need. I recognize this may not be a Firefox issue. There seems to be a funky interaction between my install of Mac OS and Firefox. This occurs only with Firefox. All other apps exhibit normal menu behaviors.

Tech details: Firefox 117.0 Mac OS Catalina 10.15.7 running on mid 2012 15" MacBook Pro with 1 TB SSD and 16 GB RAM

Many Thanks!

I have Firefox installed on two PCs. I see the option to add "Recommended by Pocket" under Settings/Home, but on the other one I don't. Screen shots of both are attached. I have completely uninstalled, cleaned up all Firefox files and re-installed Firefox multiple times on the PC where I don't see the Pocket option but nothing changes. Also gone into about:config and tried making changes from there. I want the Pocket recommendations to show on the Firefox Home page for both PCs.

Thanks