Firefox Community Forum

I am using Firefox Developer Edition Version: 110.0b5 (64-bit) on M1 Mac running Ventura 13.1.

I am building an webapp some XHR triggering in background but it is not necessary to run the application (running fine on other browsers). But on Firefox Developer Edition, It shows a error window with the message and stops loading the application.

Firefox can’t establish a connection to the server at localhost:4000.

localhost:4000 is the failing XHR request domain. I have attached the screenshot.

How to ignore the XHR failing errors just like other browsers?

PLEASE READ THOROUGHLY - Thru Firefox, I use Tineye to find related photos - I use it all the time, it's been great - I always use a VPN and have never had problems until now (as of yesterday). Now it won't search, a verify you're human window comes up, and I have to keep clicking squares, which I do - but then it says to allow cookies and start over. Well I don't want to allow cookies (Firefox-Mozilla kinda encourages using their tools to block cookies, which I much prefer), and I CANT FIND WHERE TO ALLOW (not yelling its just that I said this before and it wasn't noticed) cookies even if I did (I went to Firefox preferences all I could find was under privacy & security cross-site cookies but that did nothing) and I don't want to disable my VPN. Maybe I should mention that I just added or started a Mozilla account, as I have had immense trouble with my aol emails, and am trying to move everything over to a gmail account. My sign in to Firefox was the aol email, and I had to try (I thought I did it) add another account, which I think I did successfully. So it was right after that, that all this started. Help please! Thank you! I did get the following reply, saying to allow cookies (BUT I DON"T KNOW HOW OR WHERE TO DO IT) and something about a new browser profile and to stay out of my sync account, and I APOLOGIZE, but I have no clue what all that means. What is a broweser profile, what is a sync account and how do I stay out of it? I guess well I know i'm not too smart about this kinda stuff, so I apologize but I think I need detailed step by step what to do to fix this. I know thats a lot of typing, sorry.

There's one specific field I fill in very often and for some reason Firefox is really keen on suggesting me two searches that I looked up more than a couple months ago, on a totally different site. I can't even remove these suggestions or add new ones. When I used Vivaldi, it'd learn what I insert (even if it'd end up suggesting tens and tens of options), while Firefox doesn't learn at all.

For sake of an example, let's say that the word I use every day in this field is XYZ. Not even once was it suggested to me, I've only ever gotten the two in the screenshot below instead. And I can't remove them using the Delete key as some other article suggested.

Speaking of which, I just noticed the same thing happen to the subject line in this form 🙃

MacBook Pro OS High Sierra Firefox version: 106.0b4

When I bring up Google Maps I put the address in and Firefox shows an error message. This has been happening for a couple of months. See Error Message below.. Google Chrome has NO problem pulling up the address. How can I fix this? Thank you.

AdBlock has not made any updates for Firefox for eleven months. Do they just not care, or has Mozilla rejected them? The internet is terrible enough as it loves to scam all users on all sites.

I made a small CSS customization to my tabs in FF 115 ESR on Windows 7, so they would be flat on the bottom and rounded on the top, looking a bit more like tabs instead of buttons.

Looked ok in FF 115 ESR.

However, in FF 125, half the tabs are now cut off, including their text (see attached images).

Also the tabs background is darker in FF 115 ESR, providing more contrast between the tabs and the tab bar. In FF 125, it's almost all white and I can hardly distinguish between the tabs and the tab bar.

Why is there such a big difference in appearance between FF 115 ESR on Windows 7, and FF 125 on Windows 10?

Here is the code I used...

/* ------------------ RESIZE TAB BAR ----------------------------- */ \#TabsToolbar { height: 27px !important; margin-top: -1px !important; margin-bottom: 0px !important; } \#tabbrowser-tabs { height:25px!important; min-height:25px!important; }

.tab-background-start[selected=true]::after, .tab-background-start[selected=true]::before, .tab-background-start, .tab-background-end, .tab-background-end[selected=true]::after, .tab-background-end[selected=true]::before {

 min-height:25px!important;

.tabbrowser-tab {
 max-height: 25px !important;
 border-color: #8f939e;

 max-height: 25px !important;
 border-color: #8f939e;

} /* ------------------ TAB HEIGHT END ----------------------------- */

I inserted backslashes at the beginning of the first 2 lines of code above to preserve the hashtag sign (otherwise it displays an index number before those lines), please ignore the backslashes.

I would like my customizations in Firefox 125 to look like the ones I made in 115 ESR.

Is it possible?

Thanks!

I just got a new to me computer and it has Firefox 125.0.3 (64bit) but I was more comfortable with what I had Version 124.0.2 (64 bit). What would be the downside of changing to what I had? I just use it for home use and browsing. How would I go about making that change. I'm not to knowledgeable about computer language and stuff. Thanks, Larry

Over the last five hours, I have gotten 27 emails from Firefox Monitor for this data breach, for the same email address. I have already marked the breach as resolved in Monitor but I keep getting emails. Is there anything I can do about it?

My Firefox account and associated passwords were left open on another notebook. I have now changed my Firefox sync login password from a different PC and signed out of other devices. Can a user on the previous PC sign in with a password that is saved in Firefox?

My preferences are set so that "When you open a link, image or media in a new tab, switch to it immediately" is OFF. Therefore most of the time when I Cmd+click on a link, it opens on a new tab that loads in the background. This is what I want.

However, some websites break that behavior. 2 high-profile examples:

• In Google Docs, if a piece of text links to an URL, clicking on the text shows a small window with the URL. Cmd+click on that URL opens it in a new tab, and takes me to that tab.
• In Facebook Messenger, if I Cmd+click on a chat, again the chat opens in a new tab and I'm taken there. Additionally, the original tab activates that chat.

Interestingly, in both these cases, I get the right behavior if I right-click on the URL or in the chat and in the contextual menu choose "Open link in new window/tab/container tab": the new tab stays in the background.

So my question is: does anyone know of a way to always make cmd+click behave just like "Open link in new tab", no matter the website?

I'm on Firefox 115b4 on macOS, but this has been like this for years at least.

Steps to reproduce:

1. Have Google as the default search engine.

2. Type a search string into the address bar.

3. The address bar briefly shows a URL for the Google Search results.

4. The address bar is very quickly overwritten with the original search string.

See screenshot for example.

How do I stop step #4 happening? I want the URL to remain in the address bar, for example to be able to give somebody a link which executes the google search.

I think this is new in FF121.

hello guys I need help with this problem in firefox developed edition

Specifically, when I use the Inspector panel to inspect elements on a webpage, the selected elements are outlined with a blue border instead of being filled with color. This is making it difficult for me to visualize the layout and styling of the elements, and I would prefer to have them filled with color instead.

I have tried to find a solution on my own by searching online, but have not been able to find a clear answer. Could you please advise me on how to change the settings in Firefox Developer Edition so that the Inspector panel highlights elements with a fill color instead of just an outline?

Hi,

im getting unknown issuer on my thin-clients with a FF ESR 45.9.0. This FF is tied to the OS (Ubuntu 16.04) and the OS is the most recent compatible version for our version of the thin-clients. So yeah its super old and I'm not able to update any of this. There is no security.enterprise_roots.enabled option available. What would be the best way to solve this issue for ~400 clients. Thanks in Advance Regards Tekkion

I can't say well what is it ...but when i open links from discord (twitch/yt/etc) the Firefox take too long to start load the page but if i just click on any link direct from firefox browser ..the page load faster

-windows 10 pro x64 22H2 -Firefox Dev 115.0b5 (i use dev to load unsigned pluggins) but the problem persist in all versions

I developed a web app that checks the existing session login for each new page. So, after logging in the first time, the user is shown a dashboard with a list of functions they can access (My Account, etc). When an item is clicked and the application calls the function, it first checks for the existence of login session. If it's not there, then the user is forced back to login screen. However Firefox is deleting the session at some point so when the session is checked for the new function, the user is forced to login again. Chrome, Safari, Edge do not and are fine.

Enhanced tracking is turned off for the site and is shown as an exception. What is happening and how can prevent it?

I use the Windows registry FontSubstitutes (Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes) to replace system fonts like Segoe UI with other fonts. It takes a lot of work to get Windows itself to respect these options, to the extent that I have to make it believe Segoe UI isn't present by modifying a different registry location (Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts).

However, Firefox does not respect the FontSubstitutes settings. Based on a previous post here, this is something it did prior to Firefox 89, but has stopped doing.

An ideal solution would be a way for Firefox to correctly read my FontSubstitutes settings. An acceptable workaround would be a way to provide Segoe UI for Firefox to use while still preventing its use in other applications. (I know that, for instance, Adobe Photoshop allows users to install fonts to Photoshop itself, bypassing the system fonts folder entirely.)

I recently upgraded graphics cards from an Nvidia GTX 1080 to an AMD 6900XT. Since then I noticed video stuttering on YouTube while playing 4k videos, especially noticeable at 4k/60FPS (example video ). Prior to the upgrade, I was not experiencing issues.

I monitored task manager as the video was playing to see CPU usage, which was sitting at 25% (4 core 8 thread CPU). GPU usage was fluctuating from 1-3%.

I tried resetting all the changed configuration options in about:config, removing all add-ons, "Refreshing" Firefox, and ultimately uninstalling and reinstalling. Nothing has worked so far except for "Troubleshooting mode" in about:support. In that mode, I experience no stuttering and GPU usage rises to 25-35% with the video playing, even before I reinstalled.

This most likely isn't a networking issue as the "Stats for nerds" option on the YouTube video shows I have 10-20s of buffer while the video is still stuttering.

I would like to find out what's different about Troubleshooting Mode that is not giving me the same problem while in "Normal Mode". Any advice?

Client type : desktop Firefox Developer Edition Client version : 117.0b9 (64bits) Client language : Korean OS type : Windows 10 Home 22H2 OS version : 19045.3208

Steps to reproduce : 1. Run Firefox Developer Editon. 2. Try searching using the navigation bar on the home screen. 3. Enjoy that nothing happens.

Expected Result : Happy life at Firefox

Actual Result: Tedious LOADING

I've been using Firefox Developer Edition for the past two years without problems. From some point on(about 1 week ago), All browser's search functions suddenly don't work. Navigation bar? Not work. Searchig from Bookmark? Not work. Do not use google? Not work even with duckduckgo. with out DNS? Not work even with 142.250.206.206. There is only one website that i can access with Firefox Developer Edition. It is Mozilla's official website At this moments, I curious that "why isnt work>?" So i used Developer tools, And then I found something amazing. There was no request or response on the Network tab! (Of course, I pressed Ctrl + R) And then, on second thought, I found that the JS function that should have been small in the lower left of the browser screen was not displayed. Finally, I thought, hmm... My Firefox is broken! So i found the FireFox, and then i uninstall it, and reinstall it! All the External Plugin works, OK then What if FireFox????? Unfortunately, Firefox Developer Edition's problem remained the same. I'm sorry that i couldn't even give you a possible cause of the problem. But i SUFFER for a week! Please resolve the issue.....