Firefox Support Forum

As of 2024 06 20 there are many websites that I cannot login anymore one being Facebook with this message:Update Your Browser You’re using a web browser that isn’t supported by Facebook.

basically just the title. In the last couple days youtube.com specifically has been borderline unusable for me on firefox. All other websites work fine for me on firesfox and youtube has no issues on other browsers.

Hello!

Started up Firefox today and these whited out boxes started appearing over my search bars and random part of the screen, such as the descriptions of different articles on my home pages, extension and theme information in my settings, and different tabs (see pictures 1 and 2). The text is also white, making it almost impossible for me to see what I'm typing or selecting in the search bar (picture 3).

I've already tried some tips that I found on the forums such as changing the hardware accelerator, making sure my extensions and add-ons were up to date, etc. When I go into troubleshooting mode, the boxes disappear and Firefox functions normally, but when I tried turning off all my add-ons and themes on the regular browser, the problem still wasn't fixed. I did a full refresh of the browser, hoping that would help to reset whatever was causing the issue, but that didn't help either.

Any advice or troubleshooting tips would be greatly appreciated!

Over the past week or so, Youtube videos take a while to start, and will at times just stop and buffer. I turned off uBlock Origin for Youtube, and I have Youtube Premium, but this issue is still happening. Ookla speed test is 569.32 Mbps download, and 23.50 Mbps upload. My Firefox is set to automatically update. Current version is 127.0.1

Automatic update on my Windows 10 desktop of the the new update 127.0.1 resulted in a version of Firefox that worked more or less for some web sites but was unable to reach others.'

Hi, I would like to know which version of Mozilla used this setting of network.trr.excluded-domains: 'sbl-xbl[.]spamhaus[.]org, localhost.that.never.exists'. The default is 'undefined' as I checked in 127.0.1 and the older 124. I also contacted support of extensions that I used, no evidence of both excluded domains. Can anyone help me? Thanks a lot \!o!/

I had a crash on my SSD (WIn7 Ultimate) - " Operating system missing" error. I saved the data and want to reinstall Win 7 and import previous Bookmarks data to new install of Moziilla Firefox.

I transferred the sqlite file (s88qn337.default) from the previous install (now non working system) to the existing working Firefox directory (C:/Users/My Name/AppData/Roaming/Firefox/Profiles/xxx.default.

I then renamed "default.XXX.old" (the previous install had only one file in the Profile directory - ie s88qn337.default)

When I try to open Mozilla Firefox, with the single file (s88qn337.default) in the Profile directory, I get the error "Can't find user data".

When I then open fresh install of Mozilla Firefox on working SSD (Win 7 Ultimate) and try to Import Bookmarks, the options are only "Import Bookmarks from Explorer" or "Import from html file".

How to resolve this problem, please?

I have an issue with Firefox 127 not accepting a session cookie that I use for user authentication. I have an ASP.NET application with a login form that includes fields for login and password, and a submit button. When the button is clicked, an HTTPS/POST request is sent to the server. The server responds and sends back a session cookie named .Cookie.Name with the parameter httpOnly set to true.

When I check in Firefox's Developer Tools under the Network tab, I can see .Cookie.Name in the server response. However, in the Developer Tools under the Storage tab, .Cookie.Name is missing, which prevents the user from logging in. This problem does not occur in other browsers like Chrome or Edge, nor does it occur in Firefox version 126. The configurations for Firefox 126 and 127 are identical.

Could you please assist with this issue?

Dear friends,

I have Firefox Browser 127.0 (64-bit) installed. IFRAME is not displayed on some websites.

Example: https://www.rollerfreunde-untermain.de/gaeste.htm

Attached you will find a screen shot.

Can anyone say why this is the case?

Kind regards Uwe

I'm trying to get my Firefox installation to permanently disable private browsing mode, however, all information I can find is for the Snap version of Firefox, and not for the Flatpak version. How do I disable private browsing on my installation?

Hello, today I decided to create a new Firefox Profile. I set the directory of this profile to be my desktop, which is where I usually put things (downloads and such) by default. I thought it would create another folder there on the desktop and put everything inside that, but instead it put a bunch of junk on my desktop. No big deal, right, I can just delete the profile, and that other junk should also be deleted. Well, not only did deleting the Firefox profile delete the extra junk that was created while making the profile, it also, for some reason, has deleted about 90% of everything else on my desktop as well. There are now only a few seemingly random things left on the desktop, that it decided to spare for whatever reason.

Where did everything go? The recycle bin is empty.. Most of it was just shortcuts, not a big deal, but I did have a few folders with some rather important work that I would very much like to retrieve. Please tell me Firefox didn't just nuke my desktop, and that all of those things are now unrecoverable? Windows 7 64 bit

Thanks very much.

Hello. I am not familiar with this end to end encryption that Facebook now does for Messenger but now when I try to use Video Calling/Chat it tells me it is not supported by my browser, Firefox. I have never had any problems with it before. Is there a fix? Thanks

I have a very good PC (5800X3D, 7900XT, 32GB DDR4 3600), but Firefox (either the normal, canary and nightly version) can't play smoothly any 4K video (like the Borderlands trailer: https://www.youtube.com/watch?v=lU_NKNZljoQ ). 1440 and lower resolutions are fine, as are 4K videos on Chrome and Edge. FWIW, my CPU during 4K playback is barely used (1-2%), and my GPU's video codec (VCE) is used by around a third. Disabling HW accel makes things better, as it still stutters but it's (barely) passable. I already tried creating a new profile, but still it's the same.

Firefox on Windows 10 desk top suddenly stopped working with error message

XUL Runner Error. platform version 127.0.1 not compatible with Min version >= 127.0 Max version <=127.0

N.B. This is another machine - not this lap top

Please advise

My workplace bans Firefox. It is not possible to install it in any way on any computer. I still use Firefox on all of my personal devices, and heavily utilize the Firefox Sync to keep my Bookmarks in sync across devices. I need to be able to access my Firefox Bookmarks somehow from my work computer, so I can at least retrieve recently bookmarked items.

I am able to log in to my Firefox Account https://www.mozilla.org/en-US/account/ and see my Firefox account details, but this does not include any of my Sync data.

How can I access the contents of my Sync data? I do not even need it to be integrated into another browser, I just need to be able to access it somehow from a computer that is not able to have Firefox installed.

There is a similar question here https://support.mozilla.org/en-US/questions/1255784 which provides a non-functional non-answer which is not appropriate and does not work.

i just want to go back to how my right click worked before i hate this container feature and would like to just reopen my closed tabs with my right click i dont want to see the container bs anymore.

Dear Support Team,

After updating to last Mozilla Firefox version (126.0.1) all my ngx-datatable tables are overlapping all rows over the first one even if the entire height of the table is correct calculated.

This is a blocking point. I need assistance urgently.

I am using Firefox 126.0 under Windows 10.

I am trying to add search engines to the search toolbar. (Just to be clear, this is the search box that appears below the address bar, not the address bar itself.)

I followed the instructions here. That worked fine for Wikipedia, Google Maps and YouTube. Then I tried to add Amazon UK. The Amazon icon is now present in the search box, but when I select it, I see this message:

Firefox could not download the search plugin from: https://d2lo25i6d3q8zm.cloudfront.net/browser-plugins/AmazonSearchSuggestionsOSD.Firefox.xml

I have no idea what this means or what to do about it.

(I also tried adding it from Settings > Search > Search Shortcuts, but Amazon does not appear on that list of search engines [unlike on my other computer]. I clicked "Find more search engines", but that brought up a list of 5,192 extensions, most of which seemed not be related to searching.)

Thanks in advance for any help or suggestions.

Mike