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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?

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.

With Firefox 144, there is unasked for/unwanted AI introduced. How do I ensure that all AI is completely disabled in my browser? I found a link describing some settings, but want to confirm this will disable ALL AI in the browser. I don't want it, don't trust the privacy/security holes yet to be found and would prefer it was not included in Firefox to begin with. The list I've found is:

• user_pref("browser.ml.chat.enabled", false);
• user_pref("browser.ml.chat.menu", false);
• user_pref("browser.ml.chat.page", false);
• user_pref("browser.ml.chat.shortcuts", false);
• user_pref("browser.ml.chat.sidebar", false);
• user_pref("browser.ml.enable", false);
• user_pref("browser.ml.linkPreview.enabled", false);
• user_pref("browser.ml.linkPreview.optin", false);
• user_pref("browser.ml.modelHubRootUrl", "");

Will this do it? What about:

browser.ml.chat.nimbus

Do I need to clear that field to ensure I don't get some auto opt-in in the future as more and more of this "stuff" is put into the browser?

Why not leave Firefox as a security/privacy conscious browser and put out a separate AI browser (FirefoxML?) for those that are not as concerned. How does Mozilla ensure that no information is leaked through AI from sessions for professionals that must protect physician/patient, attorney/client information or other legally confidential information?

The File (saving to a folder) Recent function used to have the folders alphabetically. Some genius thought to reorganize the Recent folders to be in chronological order. Is there a setting to have the Recent folders be in alphabetical order again? I could not find anything. Thanks in advance.

How do I remove the pop up blocker on Firefox for certain websites? I am doing an online course and each introduction for each chapter has a short video that pops up but as soon as that happens Firefox sends a "Critical error" message then the video stops so I thinks that's happening because pop up blocker is turned on and I just dont know how to turn pop up blocker off for specific websites only like this one I am using for my study course. How can I turn the pop up blocker just for this one website so that this doesn't keep happening?

the only reason ive been using firefox is because its one of the few browsers that doesnt use AI. now this? anthony enzor-demeo what in the hell is wrong with you? no one wants this, stop pushing AI in a browser we all use SPECIFICALLY to avoid other browsers' (like chrome) sell out. i dont care if there's opt out I don't want this to be an option in the first place, and I know a lot of others feel the same.

i am not the kind of person who has brand loyalty, and if you continue with this I'll find something else to use.

I find US date format utterly confusing. I want change settings so that my Thunderbird email is in UK date format. 1 - How can I do this please? 2 - If the answer to 1) is "you can't yet" then how soon will this option be made available?

Over the past few updates, I’ve noticed an issue with Firefox where it no longer restores my previous session when reopening the browser.

I normally keep four tabs pinned and about five additional tabs open for browsing and work. In the past, I could simply click the X to close Firefox, and when I reopened it, all my tabs that are pinned and unpinned would automatically come back. Recently, this stopped happening. Now, if I close Firefox, it opens with a fresh window instead of restoring my previous tabs.

I’ve already checked the setting under General/Startup, and Open previous windows and tabs is enabled. Because of this issue, I avoid closing Firefox entirely, since rebuilding all my tabs each time has become a hassle.

Is there a way to fix this? Any suggestions would be appreciated.

Thanks :)

Hello, I just installed a clean version of Thunderbird (version 146.0.1) and set up my email accounts and CardDAV address books.

I do have multiple address books and I tried to find a setting to show the name of the address book for each contact shown in the suggestion list for recipients when composing a new email. However, I could only find a general setting to get suggestions for recipients from local address books, nothing more specific.

On a different device I still have Thunderbird 140.6.0esr installed. There, the suggestion list does indeed show the name of the address book next to the suggested contact: "name of contact <email@address> - name of addressbook"

I tried to find a corresponding setting for this in version 140.6.0esr, but without success.

So I'm wondering:

1. Did the style/layout of the suggestion list change in recent versions?
2. Does a setting exist to show the name of the address book in the suggestion list?

Additional info: The only extension that is installed and enabled on both devices is ImportExportTools NG.

Per this page: https://support.mozilla.org/en-US/kb/summarize-pages-ios

There should be a "Page Summaries" option in the Settings menu of Firefox for iOS. However in settings this option does not appear in the list, resulting in no way to turn off page summaries or remove the icon from the toolbar.

Please advise on how to disable this useless AI crap when the appropriate settings are not visible in the interface.

Then I click on an email address on a web page, the message, "This file does not have an app associated with it for performing this action. Please install an app or, if one is already installed, create an association in the Default Apps Settings page." pops up. (See image of message) I checked the Default Apps Settings page and "Thunderbird" is not a choice. I was unable to find an App for Thunderbird. With Morzilla on my Windows 10 computer, the email address would open Thunderbird. Now, I have to copy and paste the address. How can I correct this?

Is there any way to disable the ai summary feature on the mobile version of Firefox? I despise it , and if Firefox continues adding ai features, I’ll just uninstall

Hi,

I’m experiencing an issue while trying to print emails to PDF in Thunderbird. Instead of opening the print preview or print dialog, Thunderbird sends the email straight to the default printer. Because of this, I don’t get the option to choose my PDF printer or adjust print settings.

This started after updating to a newer Thunderbird version, and earlier versions did not behave this way. The menu still shows Print…, which normally indicates a preview or settings window, so this feels like unexpected behavior.

Has anyone else faced this issue, or is there a setting or workaround to restore the print preview before printing? Any help would be appreciated.

Thanks!

Have: When quoting, "start my reply above quote" and place my signature "below my reply (above the quote)" but signature continues to show below the quote.

What have I missed in this setup?

I despise ai in every use and way with a passion. Now, it gets spammed everywhere on this browser, with no apparent way to disable and/or remove that filth. I don't want to see it, ever! Why is it even on by default??? I don't want "chatbots", "Ai assistants" or any of that shit at all.

When right-clicking on the Firefox icon in the Windows task bar one has the option to "pin" items by hovering over an entry in the "frequent" list and clicking on the little pin needle icon (with the hover text "Pin to this list").

How can I pin items that are not in the frequent list? I have tried for weeks to make an important page a frequent one by making sure to visit it daily but it never makes it to the list.