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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?

I do not want AI summary windows popping up, or previewing links, or any AI features in the browser. All AI should be opt in not opt out, yet here I am forced to dig through a config file instead of having an easily accessible setting.

And Mozilla management probably wonder why people dislike them. Hint: this sort of garbage.

I have tried disabling AI settings in about:config such as

• browser.ml.chat.enabled == False
• browser.ml.chat.menu == False
• browser.ml.chat.page == False

However I have continued to see an AI summary window, seemingly at random, sometimes with a long click and sometimes when mousing over text.

I want to be clear to whoever has implemented this; this is invasive, wasteful and frustrating.

I want a single option under settings to disable all AI features. Forcing this on users is a terrible idea and an excellent way to lose market share.

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.

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.

Is it possible to open incoming mails in the same window as the list of e-mails, just like in Google? I get distracted from seeing suddenly my e-mail in another window/tab.

Thank you!!

I need to change Thunderbird date format to UK format. There doesn't appear to be a straightforward way to do this. I have already looked at https://support.mozilla.org/en-US/kb/customize-date-time-formats-thunderbird and find that file somewhat inscrutable! How soon will a setting be made available to enable date format to be changed please?

My wife and I have separate emails and we also share an email account. My laptopn has Thunderbird profile set up to receive from both and data is held on our local NAS Wifes Laptop does the same and her data is on her folder on local NAS. For the shared email, we can each access and it creates a local copy on BOTH of our respective folders on the NAS. Whilst this works, i cant help wondering if we're setting up a sync loop. THe shared email isnt used much, but is there a way that we can share the exact same files /data for the shared email on the local NAS. ie. Still have one view in Thunderbird client but have the shared email data be on a common shared folder. Still keeping our separate profiles. This worked for Outlook pst files. But New Outlook is a disaster hence moving to THunderbird. . This seems to be a simple scenario. 3 email accounts 1 shared. 3 local data sets. One shared. 2 separate laptopns and THunderbird installations. One common local NAS. ANyone have any guidance for best practice ? THanks

Is it possible to change the order in which the threrads display? Currently (default) is from oldest to newest, however this is reverse to my actual inbox which is newest to oldest. When I open a email thread I want it to display in decending order, same as myu actual inbox. Thanks.

Trying to use the PWA features. Firefox 144.0 and windows 11.

Clicking the "Add to task bar" button, which makes the PWA window, but if I close the windows it removes the PWA app.

If I manually pin the PWA app to the taskbar, it just becomes a generic firefox bookmark. It seems i'm also not getting a windows pop up related to this when looking at video guides.

Unsure whats blocking it if any has seen before

I just wrote and it w as scrubbed, that I have FIRED Chrome Fired Edge, and fired every web p;latform that replaced a 90% functional text matching system with a 2% functional AI system with the cognitive abilities of a slower than average goldfish. So I need the ability to turn off every new feature you offer or I will and I AM POSITIVE MANY AMERICANS AND MUCH OF HUMANITY WILL CANCEL THE TECHNOLOGY COMPLETELY. We don't need it it falls into Entertainment and it is not the only choice. There are still books campfires fishing making models collecting minerals sports humanitarian ojectives honesty and Truth available in real life. Stop shoving us backwards why are you shoving a pathetically incapable technology in our faces? is it so you can offer a convenient implant that will SOLVE EVERYTHING????

When I click to open a message in the local sent folder, it defaults to "Edit Draft Message", which I hate; it's too easy to accidentally resend the message causing confusion. I want to set the default to "Open message in new window" or "Open message in new tab". I have not found the way to do this. What am I missing?

It's nice to have the option to "Edit Draft Message," but I rarely want that. I'll select it from the context menu when needed.

started a new profile, imported bookmarks, the about:config settings won't die. I've deleted the user and prefs.js data etc. but all the dumb changes I made before switching users just make their way back no matter how many new profiles I create. I have standard Firefox, with Nightly and Private versions installed. Win 11 25H2 whatever its called now.. please help.

Hello,

I wanted to ask if there’s a way to configure the setting for "Store data in permanent storage" (or "Daten im dauerhaften Speicher speichern" in German) to always block/disable ALWAYS via Group Policy or Registry Editor.

As we are a small company, I would like to apply this setting for all Active Directory users.

Thank you

Best regards,

Andreas

Hello! Thunderbird has updated to version 144. All folders on the IMAP server have been renamed to their default values. Now, when I go to a folder's properties, I can't change its name. The input field is now read-only. Everything was fine before the update.

Hello,

I use Thunderbird ver 140.4.0esr (64-bit).

I have the problem that when a new mail arrives into a thread I do not see the thread as bolded. Only the oldest (read) mail appears in the list of emails. I have to open the threads to find out that there is an unread mail in the end of it (shown in bold and green dot).

How should I set the appearance so that the latest, unread appears on the top in bold, or that the thread somehow indicates that there is a unread message in it? I general I want the latest emails on the top, but for threads that does not apperar to work.

I have not realised this problem before, so I asuume it is caused by an update.

Mikael

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?