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Running Thunderbird 140.6.0esr in Windows 11. This afternoon I found that one of my three accounts no longer shows up in the folder pane, though it still appears normally in the account settings tab. I can still send mail from it, but can't receive any. The other two accounts appear in the folder pane as usual and can send and receive normally.

Any help getting the account back into the folder pane would be appreciated. -- tralfaz

Normally Firefox sponsor ads on home page occasionally inserts an new ad. I will support some occasional ads by clicking on the new ad to give Firefox 'click credit' then deleting new ad. Today when I delete the new ad another pops up 10-15 times an will not stop. That is too much. I do voluntarily support Firefox with monthly donation.

How do I stop the constantly returning ads?

Since a couple of days we get the announcement F1TV.formula1.com/nl/ is not compatible with this browser Use an other browser or hardware many Years there was no problem

Starting Feb 8, 2026 my yahoo accounts no longer work in Thunderbird. I have accessed these for over a dozen years using Thunderbird. In addition, when I open Thunderbird at all I end up getting endless loops of yahoo login messages. The mechanisms in the messages do not work at all. I have received no Yahoo mail since that date. To troubleshoot the issue I tried logging into the accounts directly through Yahoo. Broken, with no access at all to any help resource from Yahoo. Although Yahoo seems to be keeping mum on the problems, there is spotty information online that Yahoo servers were breached a few days ago. One report claimed that user data for about a billion accounts was compromised. I suppose that may explain why my accounts no longer work anywhere- neither from Yahoo itself nor within Thunderbird. Is there a way to disable the incapacitating yahoo popups pending any larger solution to this?

​I am experiencing a bug where subfolders do not appear in the "Select folder" screen. ​In the Bookmarks manager, my folders exist correctly. ​However, when I try to save a new bookmark, the "Select folder" screen only shows the root "Bookmarks" folder. ​Even if I tap the ">" icon to expand, the subfolders are not displayed. ​Device Info: ​App Version: 149.0a1 (Build #2016143751) ​OS: Android 12

I accidentally typed my protonmail password into the field of my username/mail address. I don't remember what more I did (propably answered yes to save) but now there is as autofilled my password for username always I open my Protonmail account. I am using Firefox as browser (should be the newest version) while Emailing.

I tried to delete autofill of Firefox according to the next advise: "go to Settings > Privacy & Security, scroll to "Forms and Autofill," and uncheck "Autofill addresses" to stop saving them"

Then I was astonished. There is no "Forms and Autofill" setting on my Firefox at all!

Protonmail settings didn't help either nor Windows 11 - neither FAQ.

Ilkka

I set the about:config settings when I got the new computer early last year. It's been working fine. Suddenly, searches are popping up again to the urlbar.

browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar is still set to false. Keyword.enabled is still set to false.

I see a couple of site references to browser.fixup.alternate.enabled, but it doesn't exist.

How do I get FF back to proper search in the search bar?

You started pushing a widget a while back that shows the days I've been on Yahoo, concurrent and otherwise. This thing is annoying and I want it gone. I don't care how much I've used Yahoo on my devices and You already know via tracking cookies.

Make it go away or tell me how to get rid of it - PLEASE.

Suddenly I cannot search from the search bar. It defaults to the address bar. why "fix" something that was not broken. Being forced to use the address bar is frustrating. If you go directly to the address bar, it tells you it cannot find that site.

Previous solution: switch browser.newtabpage.activity-stream.improvesearch.handoffToAwesomebar to false does not work anymore.

Please help.

Regards, Victor

I had to actually sign up fort a Mozilla account,the multiple hoops I had to jump through were ridicules, in order to ask a question of Firefox. I do not want my address bar to be my search engine. How do I disable the search engine in my address bar? And now I have to wait for an answer!!!!!!!! I used to love and trust Firefox. Not anymore.

Why isn't there a simple means to remove/prevent searches for the address bar, using config doesn't work.

I've used Firefox for over twenty years, this annoyance will end that and force a move to Brave.

hi i am unable to use the middle search bar on the firefox screen , i understand that this search bar is a dummy bar, i have been told that to make this bar work you have to alter the settings using about:config process, and changing the handoff from ture to false , to which I have done in the past and it has worked , but for a reason I cannot understand this seems not to work now , i am completely lost now and i am reaching out to the community for help and advise thank you . K.

my account is under [email address] but that is defunct and I can't access it at all. So I can't log in. I can't change to my secondary email which is [email address] Can you help me

Hey, I have a new laptop and want to login to my account. My account is an hotmail.com one. After giving the password Mozilla is suppose to send me an email with an authentification number. The email is not coming. Not in the spam section, anywhere. Tried multiple times, same issue. Add Mozilla to my contact list, nothing changes. Tried to change my Mozilla account email address, not possible as I need to pass through this process again. Is my only option to delete my account and creat a new one with another email address?

I've tuned in to Firefox this morning to find that I'm kind of shut out, no access to my usual apps, and required to enact some difficult backing up etc. When I explore, it seems to relate to Windows 10 losing its backup from Microsoft. But I'm running Windows 11, not 10. What's going on? Is this legitimate? If so, why is it complicated and why wasn't it forewarned (by Firefox)?

I have been using ThunderBird on Linux Mint for some time now. I am using Outlook.com for emails, calendar and contacts and I sync with another laptop and mobile phone. All fine until a few days ago when I noticed calendar events were not syncing with my phone. I found one calendar event in ThunderBird had an error when I manually synced with TbSync. The error report did not say anything specific. I deleted this calendar event and TbSync ran successfully uploading 2 events that it had not uploaded due to the calendar sync error. I then wanted to manually recreate this calendar event in ThunderBird. When I clicked on "New Event", the Calendar New Event pop-up window did not appear. When I minimised the ThunderBird window, the New Events was not behind it. The ThunderBird icon pinned to the panel had a "2" in the corner. When I hovered over the ThunderBird icon in the panel, it showed both the ThunderBird window and New Event window preview. When I selected the New Event preview window in the panel, it still did not become visible. All I could do with with New Event preview window in the panel was click in the 'X' to close it. I checked for Lightning Calendar Tab add-on updates. It was up to date. I check the settings. All OK. I disabled and enabled this add-on. Still not working. My Windows habits made me shutdown and restart my device. Still Not working. When I checked the other ThunderBird functions, New Event pop-up windows appeared for Emails and Contacts but not Tasks which had the same symptoms as the Calendar.