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Firefox (129.0.2) displays "401 - Unauthorized: Access is denied due to invalid credentials" (see attached image)

I have tried various combinations of setting and not setting the following in Firefox:

• network.negotiate-auth.trusted-uris
• network.negotiate-auth.delegation-uris
• network.auth.use-sspi

For the URI settings I have tried both .domainname.domainextension and https://servicename.domainname.domainextension

In Windows 10 Control Panel -> Internet Options, the site is in "Trusted sites" using a domain wildcard, and also "Local intranet" and both "Automatic logon" and "Enable Integrated Windows Authentication" are enabled. I suspect those setting aren't relevant since other browsers are authenticating without error or prompt, but calling this out to show that I've covered that base.

The web service is served by IIS 10.0 on Windows Server 2022 and the authentication provider list only includes Negotiate, but I don't believe this issue has anything to do with IIS or its configuration as, again, other browsers are authenticating without error or prompt.

Anything else to check?

Thank you for any guidance you can offer.

I am trying to use thunderbird for my Mitchell TeamWorks software but it my windows 10 operating system does not see it as my default mail app. I tried everything to get it to work. I reinstalled, I regedited, I cannot get this working correctly. What am I doing wrong.

Hi, Nearly all of the User Interface windows on Thunderbird are tiny. For example, if I open the "About Thunderbird" the window is tiny. Likewise, various windows with instructions that come up are tiny. I have been able to at least read messages and read the settings windows by cranking up the font size but this does not help in general. This feels like a display resolution issue but other programs are fine. So if I change the system display res, I expect other programs to be huge. I have seen some threads on this in the archive but for older versions. I am running TB 128.1esr (I think - difficult to read!) on an iMac running Sonoma 14.6.1. I just upgraded to a new iMac and my previous installation was on Mojave and ran a thing called Theme and Font Changer, which is now disabled (possibly some buried consequence of running that add-on is resonspible). Really would appreciate help!!! Thank you. Tobias

I run Pop OS 22.04, and use Thunderbird.

I long ago set up Thunderbird to launch from the Pop OS toolbar. I marked Thunderbird as a "Favorite", so it has an icon on the toolbar, and launches from there. When a program marked as a Favorite is running, the toolbar displays a white dot beneath the icon.

I ran a Pop OS update, and Thunderbird updated to 128.0.1esr. (I'm not sure what version existed before, but I stay very current with Pop OS updates.) With that update, launching worked, but:

- The running Thunderbird process was represented by a second occurrence of the icon on the toolbar, and that one had the white dot.

- If I remove the old favorite, then the new Thunderbird process (started from a shell) cannot be made into a Favorite, so I don't know how to get the icon back on the toolbar.

In other words, something about integration with Pop OS changed, and I no longer see how to add Thunderbird back to it. I asked System76 support about this, and they suggested I pursue the issue here.

A few weeks ago, I noticed that the contents of my inbox folder stopped displaying correctly. Initially, when I received new emails, they appeared normally in the inbox folder. However, after a few days, the contents of these messages started to disappear, leaving only blank emails. I have created subfolders within the main inbox folder, and those subfolders haven't been affected at all.

I tried repairing the inbox folder, but after doing so, the non-displayed messages completely disappeared from the inbox. I have two POP accounts (let's call them Account A and Account B), and only Account A's inbox folder has been affected.

I would greatly appreciate any assistance in resolving this issue. Thank you!

I use to be able to put in a seach term and search all events (prior, current and future). Now I am forced to choose only current and future events. Why the change? Can I change Setting to allow for searching all events again?

Hi!

First of all, mods, if I chose the wrong category and this had to go in "customize settings and preferences" feel free to move it :)

So, for several reasons I decided to completely disable SSL and the old TLS 1.0 and 1.1. I still didn't decide if TLS 1.2 is still important or it's enough with 1.3 so for now I am leaving them both. I did this system wide, with PowerShell, following the instructions in THIS THIS article.

But then there's Firefox. I don't know if Firefox can establish SSL (or old TLS) connections despite the system "ban". But I came across THIS THIS article about how to enable TLS 1.3 in Firefox and when I went in about:config and I typed "security" I saw that there are a lot of voices with SSL and a lot more about TLS than just the security.tls.version.max mentioned in that article, so I am here to ask you what to do to be 1000% sure that all SSL and older TLS are completely disabled in Firefox, and that only TLS 1.3 is enabled.

If you have reasons to believe that disabling TLS 1.2 is not a good idea, let me know, but in THIS THIS article I've read that 1.3 is much better and it's anyway backwards compatible with 1.2 in case some server only supports 1.2, so I decided to leave only 1.3.

Thanks!

Long ago I developed muscle memory to type in the main part of a website domain and complete it with Ctrl-Enter in the address bar.

That supposedly adds the www. prefix at the beginning and .com at the end.

Works great except that it seems to append "http:// to the beginning. That often results in a warning that I'm trying to go to an insecure domain.

How can I modify this behavior to append "httpS://" to the beginning to avoid all of these warnings?

When I reply with Thunderbird to an email from the IO list (of which I'm a member), the name of the individual sender of the email appears in the TO: field. How do get T-Bird to put in the LIST name? Thanks.

I've tried restarting and reinstalling Thunderbird but no change in this blockage since Tuesday. I am running Windows 11 Pro and Thunderbird 128.1.0esr (64-bit). Downloading chunks of email from Comcast and trying to import them doesn't work. Please advise as I am stuck. I will check your answers on Comcast server as I can not read them directly.

This issue is happening with every newly installed add-on, but not with add-ons installed on or before Aug 3, 2024. The add-ons are installed via addons.mozilla.org. To rule out the possibility that it's happening only with specific add-ons, I also installed one of the random recommendations on that page, Augmented Steam which has 54,248 users, and it happens with that one as well.

I'll click Enable, but the prompt appears every time I restart Firefox.

What I've tried (with a restart after each attempt):

• Clear the startup cache
• Delete extensions.json
• Delete compatibility.ini
• Via about:config deleted extensions.databaseSchema and extensions.getAddons.databaseSchema
• Excluded Add-ons from syncing

I've noticed the following in extensions.json for each of the recent add-ons after restart:

• syncGUID changes to presumably random new value
• active changes from true to false
• userDisabled changes from false to true
• seen changes from true to false

Hi, how can I be sure that all my tabs will re-open as I left them, when I power off then turn on my Macbook Pro laptop? For some reason the laptop stopped re-opening the tabs. Thanks, Kate

I cant log into x.com. Whether tracking is set to strict or not. I just get the same error. I have tried re-starting my browser and computer. I currently have it set to strict and have it turned off for this site. Why cant I go to this web site?

Firefox 129.0.2 (64-bit) Mozilla Firefox Snap for Ubuntu canonical-002 - 1.0

Running on kubuntu Linux 24.04, kernel version 6.8.0-41-generic (64-bit) KDE Plasma Version 5.27.11 Qt Version 5.15.13

I've posted a description of my problem on the kubuntu forums: https://www.kubuntuforums.net/forum/newbie-support/help-the-new-guy/681835-firefox-eating-up-a-lot-of-cpu

Here is a synopsis of my posts on that thread to distill the most noteworthy symptoms:

I have snap Firefox installed.

$ snap list Name Version Rev Tracking Publisher Notes bare 1.0 5 latest/stable canonical✓ base core22 20240731 1564 latest/stable canonical✓ base firefox 129.0.2-1 4793 latest/stable mozilla✓ - firmware-updater 0+git.5007558 127 latest/stable/… canonical✓ - gnome-42-2204 0+git.510a601 176 latest/stable/… canonical✓ - gtk-common-themes 0.1-81-g442e511 1535 latest/stable/… canonical✓ - snapd 2.63 21759 latest/stable canonical✓ snapd thunderbird 128.1.0esr-1 507 latest/stable/… canonical✓ - $

If I start firefox from the shell command line, it runs fine. It runs the shell script in /usr/bin/firefox, which ultimately executes /snap/bin/firefox. Clearly that shell script is doing some configuration that I don't understand.

If I​ hit Alt-space I see the menu in the referenced screen grab (see attached).

If I select the first entry, to run firefox from the command line, it has the same effect as starting /usr/bin/firefox from a bash shell; it works fine. However, if I select the third entry, firefox does not play any video; I've mostly tested with YouTube videos that have actual video and audio.

I'm not sure what gets executed when I select the third option from the Alt-space menu. It appears from doing a "ps -ef" that it's the same /snap/firefox/... executable. But I'm wondering why is this entry in the Alt-space menu and how does it get initialized or 'configured' to run.

Additionally, if I do start firefox from the entry with the firefox browser icon, and it fails to play video, I must then uninstall firefox using snap and then reinstall in order to get video playback to work. That is, after a failed start, simply exiting firefox and restarting it from the shell command line will not work; firefox will not play video correctly at all.

I also noticed that on my PC desktop, "snap list" lists firefox as "firefox 129.0.2-1 4793 latest/stable mozilla✓ -"

But on my old Lenova laptop running the same kubuntu version, "snap list" lists firefox as "firefox 129.0.2-1 4757 latest/stable mozilla✓ -"

​I'm up to date on both systems via "sudo apt update"' and "sudo apt upgrade"

Even more frustrating, today, for the first time, despite starting firefox from the command line, video still didn't play. I had to uninstall firefox and reinstall it.

Hi,

I have a custom site on my ISP's webspace that can be access via an https:// link. Firefox for Android (129.0.2) on my new phone (Samsung a35, Android 14) says that it's not secure, which means I frequently have to go though the not secure>advanced>accept risk process.

The problem is that this is literally the only browser instance I have that thinks it isn't secure. Chrome, on the same device, says it is, Firefox for Android thinks it is on two other devices. Firefox for Windows thinks it is. I can find no other browser on any device or platform that thinks there is any problem.

Any hep appreciated.

With Thunderbird 128.1.0esr for Linux, no longer able to drag/drop images inline. Instead of the image being embedded, it is now inserted as a link to the file on the local hard drive, which of course is useless to the recipient and not the expected behavior at all.

Hi - when I start Thunderbird my configured eadds (on different servers), Thunderbird (since nebula?) is downloading all emails from both servers and Thunderbirds opens all folders I created. It also looses some settings (color-marks of emails). Hope somebody can help - thanks!

in German: Wenn ich Thunderbird starte werden immer wieder alle emails vom server downgeloaded (zwei email-accounts auf zwei verschiedenen servern). Auch öffnet Thunderbird alle Ordner und Unterordner, die ich angelegt habe, um meine emails zu sortieren. - Ich vermute, dass das Problem mit dem update auf nebula auftauchte. - Ich wäre sehr dankbar, wenn jemand eine Lösung für das Problem weiß; besten Dank!