I-Firefox Community Forum

Hi!

We have a intranet site that works in Edge and Chrome without issues with the site added to "internet options". But for some reason we are getting 401 Unauthorized when trying to access it from Firefox. I have tried adding the urls to: network.automatic-ntlm-auth.trusted-uris network.automatic-ntlm-auth.allow-proxies: true network.automatic-ntlm-auth.allow-non-fqdn: true network.auth.force-generic-ntlm: false network.auth.force-generic-ntlm-v1: false

Ingocnito mode , same error. I have tried disabling all plugins. Disabled DNS over HTTPS.

HTTP/1.1 401 Unauthorized Server: Microsoft-IIS/10.0 WWW-Authenticate: Negotiate X-Powered-By: ASP.NET Date: Mon, 25 May 2026 08:15:41 GMT Content-Length: 0

Regards Rasmus

I run normal firefox on linux. Fully up-to-date. Every time I quit the app, it reverts to a version of my profile from a month ago, and loads all the tabs I had open then, and then receives all the tabs that I sent to the device in the interim (~1 month). As I speak, it just caught the 60 or 70 tabs in this window.

I tried changing the name of my profile folder to randomstring.defaultOLD and changed one of the backups to randomstring.default. This didn't change the behavior. I'm still stuck in the loop. I saved my tabs with onetab, because firefox isn't remembering my session anymore. I thought it was something to do with updates, like it only loses its mind upon updates, but that's not true. It thinks it's updating firefox EVERY TIME, because the one time it's loading to 1 month ago it was updating, but I'm 100% sure there are no updates to firefox in my linux. It's just hallucinating.

The articles on restoring from backup are outdated. They say to use an html file. There is no html file. It's just folders for profiles, not html files. HELP!

when i use Chrome or edge to access yahoo email I can write & edit. when using Firefox browser; I cannot write & edit/highlight/change text colours etc before sending. tried deleteing & re-installing Firefox . please help. Driving me crazy rsvp

Здравствуйте, подскажите, можно ли войти под одним профилем но иметь разную панель закладок? Например я вошел под профилем для поиска информации в браузере и есть панель закладок для браузера, которыми пользуюсь. Также я скачал Firefox Developer Edition также вошел под тем же профилем, но хочу чтобы панель вкладок была своя, и не пересекалась с обычным Firefox. Можно ли так сделать? или нужно создавать вторую учетную запись для разработки в Firefox Developer Edition

Environment

   • Firefox 153.0.1 (64-bit)
   • Ubuntu 24.04.4 LTS
   • Wayland session
   • Input method: IBus
   • Keyboard layouts:
       ◦ US
       ◦ Bulgarian (bg+bekl)
   • Graphics:
       ◦ AMD Radeon Graphics (renoir)
       ◦ WebRender (Software)

Summary When typing a multi-word search query in Bulgarian into the center search field on the Firefox New Tab page (about:newtab), the first word disappears immediately after pressing the Space key. The issue occurs only in the in-page search field. Typing exactly the same text in the Firefox address bar works correctly. Steps to reproduce

   1. Open a new tab (about:newtab).
   2. Click inside the center search field.
   3. Switch to the Bulgarian keyboard layout.
   4. Type the first word, for example:   български
   5. Press the Space key.

Actual result The first word disappears completely. The search field becomes empty and the caret remains after one blank space. Typing continues normally from the second word onward. Interestingly, pressing Ctrl+Z immediately restores the missing first word, indicating that Firefox performs an undoable edit operation rather than simply ignoring the input. Expected result The first word should remain in the search field after pressing Space. Additional observations

   • The problem does not occur when typing in the Firefox address bar.
   • The problem does not occur on google.com or in other web page input fields.
   • The problem is reproducible in:
       ◦ Troubleshoot Mode
       ◦ a brand new Firefox profile
   • No third-party extensions are installed (only the built-in OpenH264 codec is present).
   • Setting

browser.newtabpage.activity-stream.showSearch = false removes the in-page search field, therefore the issue disappears because the affected widget is no longer present.

   • Disabling

browser.search.suggest.enabled does not change the behaviour.

   • If the address bar already contains text before clicking into the New Tab search field, the issue may no longer reproduce. This suggests that the bug could be related to focus handling or interaction between the New Tab search widget and the address bar.

Reproducibility Always reproducible on this system. Notes The issue appears to be specific to the Firefox New Tab search widget (about:newtab) rather than to the operating system, keyboard layout, input method, or user profile. ____________________________________________________________ The text above was created following extensive discussion and numerous tests, in collaboration with ChatGPT.

firefox on windows 11, keeps blocking my camera and Microphone despite express permissions to allow, i look in permissions and the site is clearly marked to allow camera, but when i goto sitye, no camera or mic is allowed until i delete the permission that is supposed to allow it.

I have counselling at https://survivorswestyorkshire.whereby.com/chrissy

I allow my camera and mic.

I return to the site and it tells me camera and microphone blocked.

I goto0 settings>Permissions>Camera

It clearly states that the website is allowed to use the devices, but when on the website the devbices are blocked. Whats messed up is, if i delete your settings>Permissions>Camera, it allows me to use my camera and mic, until i refresh the webpage and its blocked again.

This makes zero sense and is every reason for me not to use Mozille Firefox as a browser at all.

Sincerely

Complex Autist

I've been using the split view feature and really like it... however I constantly find myself doing the following:

Having a split view open with related pages, for example a list view in the left pane, and I want to open one of the items in the list view in the opposite pane, currently I have to:

1. Copy the url in the left pane 2. Switch to the right pane 3. Target the address bar 4. Paste the url 5. Load the new url

Ideally an additional 'open link in x' option could be added specifically when a user is in the split view, that will open the link directly in the opposite pane of the current split, so left > right or right > left.

My question is, is there is a way to do this already; I cannot find any reference to this in the docs.

"Open Link in Opposite Split View" would be perfect.

Firefox is saying that there is a problem with my Xfinity internet & advises me not to log in. This happens only on my mac. Firefox seems to work fine on my i pad & i phone. Safari does not show this warning & they are very strict about internet issues. how do I fix this problem?

My VPN has. stopped working although it has reset as it does monthly, worked fine a week ago, Still have 50 gig and won't engage with server? any help appreciated....

I was creating two-factor authentication for my account and when I tried to create a passkey the only options were to use iPhone, iPad, or Android device, or Security key (see screenshot).

There's no option to add the passkey to a password manager (I'm using BitWarden).

I'm using Firefox Version 155.0 (64-bit) on Windows 11 (25H2).

How can I change preferred theme from light to dark with resist fingerprinting enabled? I already tried to change "layout.css.prefers-color-scheme.content-override" to 2, but this did not help.

The server not found response started right after two changes: 1) Firefox last update 2) opening an account with Mozilla. It usually works on second request but occasionally not. Thanks for your help in advance.

Running 154.0.1 on MacOS 26.6.1. Sometimes firefox stops working and I think I'm having an internet issue. No page able to load, not even a google search. I see the cache is full at 1gb and I clear cache for the last hour. Browser starts working again. To me, the problem doesn't seem like not enough cache capacity but the browser refusing to evict old, stale cache. How do I fix this other than manually clearing the cache? This seems like a bug that should be fixed.

Hi,

if I try to open an uploaded project, Firefox shows me just the "Loading"-Animation. This war reproduced on several PC's, using a clean profile and the Error-Modus (without Addons). In Firefox fpr MacOS it works.

Knows anybody the problem or can help fix it??

Greetings, Christian

1- Firefox shows I have windows 10. Not so. I have windows 11 home, version 25H2. This may be problem that causes the issues. 2- Since Update months ago, profiles, bookmarks and passwords disappear constantly only for me to replace manually the bookmarks and passwords to disappear over and over again. Don't need multiple profiles just one that works as in the good old days. Used it for years but cannot find help and ready to delete and just use microsoft edge. Totally out of patience. ?????????????????????????????????????????????????????????????????????

I got a message Firefox software was not updating. I was sent a download in .exe link. ALL of my tabs are not accessing the addresses. I checked Restore All Crashed Tabs. No resets are happening.

Is this due to a bug in the upgrade? What are Mozilla's actions to fix this. I have used Firefox successfully on my high end HP OMEN PC. I do all I can to avoid Microsoft, Google, etc.

I need HELP.

[redacted email and phone# from community support forum]

This message is using an iPhone ProMax. Not good.

Hello!

It's great there is finally a way to change keyboard shortcuts. However, I cannot find a way to change the keyboard shortcuts for previous and next tabs. Ctrl+tab and ctrl+shift+tab are not very comfortable positions. I would much rather have it something like ctrl+alt+left or right.

Is this something I will be able to do soon? or maybe the setting is there and I am just being blind?

Thanks