Forum der Gemeinschaft Firefox

Starting early this morning I could not open a website (where I purchase supplements) I have accessed in the recent past. I added the address to the DNS listing but that didn't help. In the verification lock icon in front of the address it says the connection is secure. But below it states the Connection verified by a certificate issuer that is not recognized by Mozilla. Prior to 1/22/25, I had no issues opening this or other websites. It doesn't matter if I have my VPN turned off or not, the website does not open. Was the Mozilla update of 1/22 the cause? If so, how do I rectify the issue I currently have? If not, how do I rectify the issue I have?

Over the past couple weeks of updates, the about:processes page is now missing several elements, such as the memory usage, CPU usage, and the close (X) button for each process/tab. See attached screenshot. Normally each row would show the memory, cpu, and if it's a closeable tab, the X button would be on the far right upon hover.

Browser: Firefox Developer Edition 135.0b3 64-bit, build 20250110123854 OS: Windows 10 22H2 64-bit (Windows_NT 10.0 19045)

Let me know what other info you need to squash this bug. Thank you!

Hi all,

I’ve been using Firefox for a while now, but coming from Chrome, I’m finding some aspects of Firefox’s cache management and tab behavior a bit inconvenient, and I wanted to share my thoughts.

The issue:

When I restart Firefox (version 133.0.3-1), it loads webpages from the disk cache, which is fine because I’ve set browser.cache.disk.enable to true and browser.cache.check_doc_frequency to 2, it will always make a request to the server on restarting Firefox with the default value of 3. However, the problem arises when I open new tabs — they also load from the disk cache instead of requesting fresh content from the server.

What I’m looking for:

   A way to have Firefox:

Load webpages from the disk cache when restarting the browser (which I want, and I have set browser.cache.disk.enable to true for this). But always make fresh requests from the server when opening new tabs, no matter what the cache settings are.

In Chrome, this behavior is more intuitive — it loads from the cache after restart but always fetches from the server for new tabs, which I find to be much more reasonable.

I understand that about:config provides settings like browser.sessionstore.restore_on_demand, but adjusting this option makes Firefox fetch content from the server for all tabs, including those opened after a restart. This doesn’t seem like a perfect solution because it takes away the ability to use the disk cache after restarting the browser.

I would really appreciate it if Firefox could offer more granular control over this behavior, so users could get the benefits of both caching and real-time requests based on the type of tab (restart vs. new tab).

Thanks for your attention, and I hope to see some improvements in future updates!

All of a sudden, I get a "Not enough room to save" error message when I try to download a fill. There is plenty of room on my disk.

Also, it's not giving me the option of just opening the file.

I've been needing to use Edge to download files.

when I try to visit chess.com, mozilla sends an uodate offer ( for browser?) but am not able to download or progress

Firefox freezes when signing in/typing username during the Gmail sign-in. Since the V..0 release, Firefox crashes every time I sign in to Gmail. I have already disabled all add-ons and tried signing in in safe mode, but the issue persists. As soon as I start typing the third letter in the sign-in field, Firefox freezes.

I've used Firefox for many years. The past month or so weather radar doesn't come up on multiple weather sites, pages are slow to load or don't load, getting error codes on video's, pictures don't always load, and many other problems. I uninstalled Firefox and re-installed the current browser and I still have all these problems. I'm having to use another browser now. I run Windows 11 on my PC.

I am sorry if this is not the place to ask this question. I am new to web development and have been trying to solve this issue for days. I have an ESP32 acting as an http server. I have developed web pages which have separate html, css, and javascript files. These work as expected when delivered locally (i.e. I double click on the the files), however, when they are served by the ESP the style sheet is ignored and I get the message

The stylesheet (url) was not loaded because its MIME type, “text/html”, is not “text/css”.

from Firefox debugger. The stylesheet is ignore across all browsers (Firefox, Chrome, Opera, Edge), however the error is only shown in Firefox. Normally, of course, I would expect an issue on the ESP32 side, however, the non-Firefox browsers do load the stylesheet (even tough they ignore it) and I am able to verify that the stylesheet is identical to the one served locally.

Oddly, if I open a Firefox tab and load the page, switching to developer mode causes several requests for the stylesheet and the styles are then applied. Subsequent refreshes of the page causes the style to be lost and closing/opening developer mode has no effect.

Although I have disabled javascript to try fix this problem, when javascript is loaded I get a similar message (except the javascript is loaded).

I believe I specified the MIME type because I exactly coped several examples

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8"/> 
    <meta name="viewport" content="width=device-width, initial-scale=1"/>
    <link rel="stylesheet" type="text/css" href="styles.css" />
<!--<link rel="stylesheet" type="text/css" href="name-of-stylesheet.css" />    -->
<!--    <script type="text/javascript" src="ESP-UI.js"></script> -->
    <title>My ESP32</title>
</head>

Thanks for the help!

I downloaded a PDF and used Firefox to view the file. I'm trying to find key words in the PDF and I always get phrase not found. As a test I inputted a word I found in the document but find in page stated phrase not found. What am I doing wrong? I remember that I have used that feature in the past and it worked.

Compact mode doesn't seem to work after I've updated to the latest Zen browser

Really loved that feature but both the tabs and the tool bar don't disappear like the used to, they just stay where the are.

Since I updated firefox, something has been wrong. Twice now it's like the browser has just stopped working. When I use google, and I change the search. The page html keeps changing back and forth between the two pages.

What's worse, is that the connection stops working. I can't get any of the pages to load. I thought it was the WIFI connection but then I started using Microsoft Edge and it's fine. It's not the WIIF. It's the FIREFOX MOZILLA browser that is not letting me load the pages. Which is annoying as hell because I use YouTube a lot and the videos won't play. Or stop loading in the middle. There has to be something that can be done about this.

I have been messing with my computer and this morning Firefox had ceased to function, and I will be looking for my extensive bookmark list here or on another drive.. I just feel that windows 11 is pernicious!!

Recently, Firefox immediately scrolls to bottom of a newly opened webpage. Very frustrating as must scroll manually back up to top of page to begin reading. Thank you for any assistance.

When loading certain pages (on web application) the motion icon starts and after several seconds it changes to the sand clock icon despite the setting described in 'https://support.mozilla.org/en-US/questions/1303416' being done - ui.prefersReducedMotion set to 'false'. My work is all done in this web app and it is very important to see when data is being uploaded (grey/black dots) and when the page is supposedly being refreshed with updated data being downloaded (blue/green dots). Why is the preference being ignored and how to fix it so you always get the motion?

my new monitor offers a screen where I can shut down, sleep, or restart.......I usually chose sleep, because I think it allows me quicker access to my browzer home page when moving the mouse for reboot. However, about six or more times now, the sleep mode will stop, a "don't interrupt" message in ghost script in the upper left hand corner of the screen comes on, the an HP logo with a dizzing circular moving gif suggest the computer is starting........no so. I have waited 30 minutes or more, started and stopped with the power button, hit every key on the board and swear prolifically now and then with NO results.

Using a fairly new HP computer, win 11, and version 134.0.2 of FireFox......AND, I'm a good guy. I think so, anyway. What am I doing wrong. It seems that each time this happens, if and when the computer will restart, that FireFox has an update in the wings and needs to have that installed before I move on to use the pc. Is there a connection?

Sid Hausding paid subscriber and fan of FireFox since your beginning