All Products Community Forum

I know nothing about the dev options for Internet settings and minor turned on and it says the remote server is set to production. No flipping idea what this is. Can somebody please help me?

I launched Firefox the usual way with a private browsing shortcut today and it opened a regular, non-private window. I checked the settings to select again "Add private browsing shortcut" and went in the app drawer to make sure I was tapping the right one. Still, a regular, non-private window. Rebooting the phone did nothing. App is in the latest release version.

Opening a private window is still possible by tapping the mask icon in the initial non-private window or by long pressing the shortcut and choosing New private tab, but that in no way replaces actually launching the browser in private mode as default like the app itself promises and used to do. According to Reddit, I'm not the only one experiencing this.

How software gets updates with such a glaring flaw is beyond me and I can't decide whether it is worse if this is an accident or intentional.

When I receive an email with double line spacing I can't find a way to alter this to single line spacing. I'd like to be able to change from one to the other at will. M

Hello Everyone,

I am seeking assistance to configure Firefox browser so that internet access is blocked when the browser cannot download or access the proxy Auto-configuration (PAC) file. Our organisation enforces all web traffic through proxy servers defined by a PAC file. For compliance and security reasons, users should not have any direct internet access unless the browser is able to successfully retrieve and apply the PAC file.

The desired behaviour is:

1. Firefox attempts to download the PAC file from a defined URL. 2. If the PAC file is unreachable or fails to load (e.g., due to network restrictions or the device being outside the corporate network), Firefox should "fail closed" - meaning it should not allow any direct internet traffic. 3. This is effectively a "fail-block" mode: no fallback to direct connections, and no cached or bypassed proxy settings should allow internet browsing.

This behaviour is critical to prevent devices from accessing the internet without applying corporate proxy rules. I would like to know:

1/ Whether Firefox currently supports a setting or policy that enforces this fail-block condition when the PAC file is unavailable. 2/ If not, whether there are recommended configurations or enterprise policies (e.g., via `policies.json` or Group Policy templates) that could achieve equivalent enforcement.

Thank you for your assistance and guidance.

This is a similar problem to other threads, but I haven't found my solution there.

(1) Opened Thunderbird (128.8.1, 64 bit, Windows 10) this morning, and got "No messages found" in every folder, including Local Folders.

(2) Thunderbird still retrieves New (unread) messages, audio-announces them, and the header appears in the Message Header pane. But once they are read, the message header no longer appears.

(3) In Troubleshoot Mode, all messages are still there and visible. Turned all extensions and hardware acceleration off, and using the standard system theme. Problem is still there in normal mode.

(4) If I run Search, it finds all relevant messages, and I'm able to display them.

It could be a bug in the program, or I may have just accidentally changed some setting that's causing this -- but it sure would be nice to get everything back and visible. Help, please!

I know how to place the preview pane on right with the vertical layout, but I would like to switch the place of the preview pane with one of the message tray pane. In other words, I want set the panes in a orders like the folder pane, the preview pane, and the message tray pane from left to right. I do not know how to do it so I would happy if anyone teach me how.

Hello All, I'm new to Thunderbird and here is something I'm wondering about: I created all my accounts and set everything to Unified ... all works fine. All 5 accounts show under "All Folders" ... if it's also checked, but I don't use it usually. In Unified view, however, UNDER the unified folders, my primary account is missing...?!? Again, I'm talking about the account list UNDER the unified folders! ... not the "All Folders" list! (if it's checked) (I usually don't have "All Folders" on)

The drop-down lists of the single unified folders, however, e.g. Inbox, Sent, etc., DO SHOW the primary account! (On a side note: under Drafts only four accounts show ...?)

So, why is the primary account missing in the list UNDER Unified folders ... (there are only four plus "Local Folders") but it is listed in the separate unified folders, if opened..? I hope explained it clear enough.

Please see attachments

BTW, at my home computer, ALL accounts are showing (in Unified view) under the unified folders. Please let me know what I did wrong or if I have to explain it better.

Thanks

Hi I see that Firefox has the option to ask an AI chatbot, with your options for AI being Claude, GPT, Gemini, and Le Chat Mistral. What I'm not seeing is an option for Lumo, Protons new chatbot. My question is is there any future support coming for Lumo, or better yet, an option to let FF users choose ANY chatbot, not just these 4?

In both my desktop older installation (now updated) and my new laptop installation, when I go thru Account Settings and check off what I want, it all changes when I leave the setup. I uncheck the startup page, and when I open both versions of Bird, the startup page is there again. Same with table/card setup, and other options. Isn't there a "save" in Account settings? Thanks, Stacy

Before the update that just dropped, whenever I would open the app, it would open in private browsing by default. After the update it opens a regular non private tab. Any way to fix this?

I installed Thunderbird 138.0.1 (64-bit) on a Win 11 desktop computer yesterday and the column headers for the messages are not displayed. I have View/Headers/All, View/Layout/ Classic View, Folder Pane, Message List Header selected. How can I get access to the message column headers to display them and later select the ones I want ?

Thanks, Corey

There used to be a menu in the message header (lower right of screen) that included viewing the message source. I accidentally deleted it and cannot find how to restore it. I have looked through the Config editor and main menus and cannot find an option.

How to get rid of "Your browser is being managed by your organization"? This thing is driving me crazy(er)! Please 'dumb down' your reply, as I am not computer literate. If it's a malicious attack, my anti-virus is not picking it up. Thanks!

I read online that Firefox is planning on implementing AI features. Given the track record of AI in other browsers leaking private information, bogging down connectivity, and generally being a nuisance towards users, I was wondering if there will be opt out features in future updates? Or know of forum threads that will update with tutorials on how to turn off AI features?

If not, does anyone on this forum have recommendations for no-ai browsers?

After installing thunderbird, It takes me hours to figure out that my fonts are too small because of one value in Settings > General > Language & Fonts > Fonts > Advanced > Fonts for Other writing systems gives a too small number.

It seems insane and I don't think users can easily get there. Maybe some users want to set different fonts for different languages and the "Fonts for ..." is for them. However, for most users who just want to change their font size, I don't think it's a good experience to going so deep and find an option in the loooong "Fonts for ..." list.

So please give users a simple option where I can just set my font size without such pain.

I know there's a font size option in TB menu but it doesn't work as expected. In my case, the font size shown in TB menu is 16 while the font size of my plain text emails is 12. And 1. email font sizes will change to TB menu size as long as TB menu font size is not 16. For example, when changing TB menu font size 15 -> 16 -> 17, email text just suddenly goes from 15 to as small as 12, and then from 12 to 17. 2. email font size seems changing with the TB menu font size. However, email text font size will go back to what it was when open another email.

View > Folders > Folder Pane Header [v] All Folders All folders is greyed out (cannot select).

I believe being able to make this selection would cause the email account name to display expanded selections. I want to be able to select this for all my email accounts to display properly in the Folder Pane: (example) Inbox Drafts Sent Spam Trash

Uploaded images are:

1. 1. View > Folders > Folder Pane Header > [v] All Folders > All folders (is greyed out - cannot select).
2. 2. My email client name list with no expanded selections.
3. 3. An example of and expanded email client name

Any help would be greatly appreciated.

Thank You