Firefox Support Forum

I've been having issues with the themes on the Firefox Browser. Almost all themes forces dark-mode on the browser. Since update 100 it no longer effects websites, but it still affects the browser (menues etc) despite me having the settings locked on light-mode.

So I am a web developer, is there a way to change the version of Firefox developer to the latest Firefox version? Because it is currently in beta version.

I am using Firefox developer for web development, and also for testing, and also for day to day web browsing. I just realized that the Firefox developer is a beta version, but our users use the latest version of Firefox. I believe this can be a problem when the development environment is not the same as the user's version.

If I install Firefox's official browser, it will be a waste of storage.

bold text Sorry! 0 results found for ‘I download & Install my LibreOffice 7.5 on FireFox then Microsoft steals it from you and puts my LibreOffice 7.5 on Bing on the Microsoft desktop. Can you do anything about this????!!’ for ‘Firefox’

How can I permanently force firefox's automatic updates to be turned off? Which guy modified the original design for the new version of Firefox bookmarks? Is there something wrong with that man's brain? Is the spacing of the new bookmark item too large to read? It's very uncomfortable.

Hi, I've been having issues with Firefox for some time now. Every page I got to throws a NS_ERROR_NET_INADEQUATE_SECURITY error. I cannot fix it by setting network.http.spdy.enabled.http2 to false is because Firefox then starts crashing. In the past I've gone around the error by turning http2 off, but recently, first the developer edition, then after today's update to 91.0-0.1 of stable version Firefox crashes if I turn the feature off.

The developer Edition started throwing NS_ERROR_NET_INADEQUATE_SECURITY sometime in spring, then started crashing in June I think. The stable version followed soon as described above.

I am submitting this ticket from a beta version, which for some reason does not have this issue.

I thought it may be the Linux version of Eset, but removing it did not help. I cannot think of any other reason why am I getting those errors, but it seems I am alone because my colleagues don't seem to have this issue neither on macOS, nor Windows.

I just updated Firefox beta version to 94.0b9 and now I can’t seem to go to some websites. Like “support.mozilla.com” - “accounts.firefox.com” - “addons.mozilla.com” I get an error message “An error occurred during a connection to “support.mozilla.com” PR_END_OF_FILE_ERROR The same thing happens with many other websites that I need to go to. I had taken a screenshot of the message but I can’t upload it! because I can’t go to this website from my Desktop PC, so I am doing this report from my iPhones browser.

Thanks for your help.

i recently noticed how ive been missing this function and i havent been able to use the "date filter" because of it.

what can i do to re-add it? it dissapeared when firefox did an update.

in the picture below you see amount of rows in slimjet browser start up page . can anybody tell me how to get these multiple rows in to mozilla-firefox start up page please ???

On my new PC with a fresh and fully up to date installation of Windows 10, Firefox tabs keep crashing for no reason.

Ticking all the boxes they give me in the crashed tab and hitting reload/refresh tab is unlikely to actually fix the tab. I have to hit that button at least 5 times to maybe get the tab working again and even then it's basically a coin-toss whether it actually gets fixed or not.

I have 7 firefox.exe.(number).dmp files with no way to upload them here but if there is an way to do that please let me know so I can provide additional data.

Please help me with this ASAP, I'd rather continue to use Firefox on my new machine than go back to Chrome. Thank you.

I did not choose a BETA VERSION. I have used FIREFOX since VERSION 1.0. IT USED TO BE THE BEST BROWSER EVER CREATED. BUT NO LONGER. WE use Firefox to accomplish things, not to debug BETA versions all day. One day I wake up and you FORCED rel 89.0 on us and it turned the whole WEEK to crap. I had 6 consecutive crashes the other day. Today I had 5 consecutive crashes. I had to turn my PC off and give it and me a rest. I did not ask for a BETA, even to leave rel 88. YOU 'forced' it on us with your "you have no other chooses if you want to continue using FIREFOX attitude. And all you can say is: Go BACK to 'stable rel 90 AND CREATE A NEW PROFILE? DO you have any idea how hard it is for us, a USER to CREATE A NEW PROFILE FROM SCRATCH?

THIS MAKES NO SENSE, YOU CRAM A "BETA" ON US, IT CRASHES A HALF DOZEN TIMES A DAY and your answer is to go back to a stable version YOU FORCED ON US? Then we spend a day or two creating a NEW PROFILE until you force ANOTHER BETA on us to test for you? You can't let us stay on a STABLE version like rel 88 until you work out the bugs then "tell us" there is one available and advise us to INSTALL IT? THIS IS CRAZY, let alone "Professional".

I've been having an issue with firefox when trying to load my emails in aol. I don't have this problem with other browsers. After logging in with user name and password, there is a consent page that pops up. After answering that prompt, the emails should start loading. It's been taking almost 2 minutes to load. I thought that by updating to the latest version, 91.0, today, that problem would cease. It hasn't. Any ideas?

I normally use Firefox Beta. Ever since upgrading to v92 the option to Send Tab to Device has been missing when I right-click on a tab. I've downloaded other versions of Firefox and the issue seems to follow me out of Beta and into the regular release. I've seen other people having issues with syncing and sending tabs between devices as of late, but no one seemed to be completely missing the option to do so.

Whenever I sign into Firefox, all my themes, add-ons/extensions are added via Firefox Sync. That's fine, but the problem I have is that whenever I sign into any Firefox browser, an old theme I used to have that I no longer have on my account keeps coming back, and I've tried to find solutions to this issue, but none have had this kind of issue. It may be similar to issues those have had, or currently have, but I can't seem to do anything to remedy this issue.

Keep in mind that this is not a Firefox browser issue, it is an account issue.

I'd be deeply grateful to any assistance you may have for me.

I've recently been having troubles playing videos on Firefox.

My school website uses Vimeo embeds, but recently when I've put the videos in fullscreen, after 4-5 seconds it stops responding. The video freezes but the audio continues, and the controls don't come up when I move the mouse. I can press ESC to exit fullscreen, but the controls are still gone and the audio keeps playing. Then after a few more seconds I get the warning "This page is slowing down Firefox, to speed up your browser stop this page".

If I don't use fullscreen but instead zoom in on the page, it also freezes. If I try the same things with Edge it does not freeze. I also made sure that it was only affecting Vimeo videos, by testing with other platforms and other vimeo links.

I found previous reports of this issue, but all of them were either on Linux, or it was an issue with flash player, which is not relevant anymore.

Not quite sure how to debug this but I would be happy to provide further info. It's really important that it works again :/ Thanks in advance!

My repro steps: 1. Find a video on https://vimeo.com/watch 2. Play it and enter fullscreen 3. Wait around 6 seconds

Try this test first. Go to About:Config, write TLS , change the setting to max (4) . Then attempt to download the firefox installer. The website won't load, as the webmasters did not enable TLS 1.3 , which in 2023 is kind of a shame. The browser cannot update itself either automatically if only TLS 1.3 is allowed, and TLS1.2 is disabled.

The can be an easy fix. I wonder why Mozilla did not solve this already years back. I also wonder why fans, and security researchers did not scream about it in the past..

For the download.mozilla.org the cipher suite Key Exchange is P256, while the Signature is RSA-PKCS1-SHA512, for Transport Layer Security 1.2

I'm sure Mozilla can do better then this, so kindly review these items, and update your website with stronger / modern encryption standards. Decommission the legacy ones please. While you are at it, please also enable HSTS. ;) Cheers!

Hello, I've noticed a change since the last update and don't understand why?

When opening the bookmarks tab I would get the drop down of a long list of links I have saved. I sometimes bunch them into groups so when looking down the long list, I can see the link I want better when more than one are from the same website.

But my issue is that when I went through the list and found that group of links, I could click onto one to open the page. In the past before the update I could click on the bookmarks drop down again, and still see the same area of links I had just clicked on.

Now when the bookmarks drop down closes it defaults to the top of the list and I need to scan down to find the links I was looking at again. Why? Yes when I closed the browser off and reopened it the bookmarks list would start at the top again. But if left opened I could click on the bookmarks tab and it would open to the same link area I clicked onto last.

Is there a way in settings I can reverse this annoying, unnecessary change.

A word to the Firefox workers that like changing things for no reason. I use Firefox because I like the things your browser has that the others don't. Keep taking the little things away that people like, which you seem to keep doing, then my favourite browser will just become "The same old s#*@" like all the others.

Firefox appears to have just updated. Now my bookmarks list is so long I have to scroll down to see everything. It looks like everything has been spaced out further, which I hate. It takes up was too much space. They were probably going for a more elegant, less cluttered look, but it just ended up making things more aggravating for me. There should be a way to adjust or turn off the spacing feature. Any suggestions?

Hi Mozilla Firefox Team,

As my project is using indexDB, it doesn't load in Firefox Private Mode. Can you help me on how I can access & change "dom.indexedDB.privateBrowsing.enabled" config value from JavaScript code. Before there use to be a Preference API by Firefox, but now when I go to that link it displays 'page not found'

Hi there,

I've just downloaded the dev version of Firefox, and for some reason some of the text defaults to italics; I can't see where to change this. On all other browsers, this text is not italic.

Does anyone have an explanation / solution?

The non-italic text in the picture attached is the 'good text' which accurately reflects itself accross browsers and devices. The italic text is the 'bad text' that I want to change for consistency.

Thanks!