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1. Most of my stored passwords in Fire Fox "Passwords" do not work anymore. They do not fill in user name and passwords. They are correctly listed in Passwords and the user names and passwords are correct and can be seen and copied. Also the function "Search in Settings" is not working. It cannot find anything, stuff that clearly exists produces no answers.# Numbered list item

Used old method to setup email accounts and it worked fine. New UI will jam the user name and host name and host name together for new email account setup. In UI for: Username It will have the full user and host together eg. test1@test.com Then during account setup after you enter password, I can see it on the bottom of the UI panel, so like this... test1@test.com@test.com When you go back it will put in the Username field, test1@test.com even when you deleted the host test.com from it. Also the host field screws up. It will put a period in front of the host name eg. .test.com So you have to delete the period.

I have no problem receiving emails on this account [redacted]@smartpointproducts.ca however sending or replying doesn't work it's not the passwords here's my SMTP server settings screenshot below.

It's very odd. Normally moving an email, say from the Inbox to the relevant year's archive, takes "no time at all".

Which is true for all the mailboxes shown on the attached screenshot, EXCEPT for the four at the bottom. Moving even one message from Inbox to Yiddish can take ten seconds or longer (with the dreaded "Not Responding" occasionally). Moving something in the opposite direction is also screwy, only from those four.

I had thought that it was because they're rather large. This first started when there were just Yiddish and MSW, and I split off most of the earlier years into the archives shown. To no avail.

It's only an annoyance, but I'm puzzled about how such a thing could happen.

Also very slow tagging or untagging a message just in those mailboxes.

Moderator Notes:

• need a performance profile https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance

There used to be an option before, but now it just always pops up. It is never useful for me and constantly switching to offline mode or using some other account first is a pain. There is no button to continue manually.

I just purchased a new PC. HP OmniDesk Slim model with Intel Core 13, Win 11 home version, 8 GB DDR5, 512 GB SSD. I just read a previous article, "Move Thunderbird data to a new computer." When you make the move, does it also bring your account settings with the move? And by the move, I mean copying and pasting from old PC to new PC. Or do I enter this info manually? I am moving data from old HP w/win 10 originally installed, to new HP w/win 11. I also read a previous article on forum, "An alternative method for manual transfer between Windows 10 and Windows 11 computers." This was also included in this article. "This section assumes you have a default Windows installation and will work on computers upgraded to Windows 10 from previous Windows versions." My old computer had win 10 originally installed, not upgraded, (as stated above). Any info/help you can offer will be deeply appreciated. Thanks

Since today's update to esr 153.5 a lot of things have changed for the worse. One annoying thing is that Firefox always opens now in Minimised view...why? I've never used Firefox Minimised...so now every time I have to click Maximise. Another one was that the Hamburger menu items suddenly had huge spaces between everything...at least I was able to find someone on Google who had a css to fix that. But the same thing is happening in the right click menu also, I had a css for that for years but now that doesn't work. The other super annoying thing is the scrolling has totally changed, I always used to uncheck 'smooth scrolling' and check 'autoscrolling', although I never use what they say autoscrolling is supposed to be about...something about holding the middle button on the mouse?? All I know was that setup used to make the scrolling in Firefox excellent...now it's basically annoying smooth scrolling whatever I check or uncheck. The other thing is after this happened I uninstalled Firefox altogether, and reinstalled the 150.0esr version and all this stuff is the same...even though I was previously on 153.4esr...and it wasn't happening on that? So I suppose I might as well just update to the latest one then? And just put up with all this annoying stuff. By the way, I'm still using Windows 10...not one issue a year after all the doomsaying from Microsoft [Defender still gets security updates anyway?]...which makes me wonder about the so-called 'security' issues with using an older version of Firefox. Thanks, any ideas for ways to fix these things would be very much appreciated. Especially the scrolling thing.

About 4-6 weeks ago Chase started throwing an error message when I tried to log in. Some other banks, credit agencies, brokerage houses also same thing. The work with Chrome and Edge.

Can Mozilla get past this or do I give up and use a predatory browser?

As much as I hate ads on YouTube I don't want Firefox to block the ads because if they find out you are blocking ads they will block you from Google and YouTube. I have Google pages and other things on their sites that have been there for years. Plus, I feel like I'm stealing a service by not lets the ads run that pays their bills and the content creators on YouTube. Please tell me where in Firefox I can turn the ads back on.

I have used Mozilla products since Netscape Navigator came out in 1995 I think it was. I went to a local internet provider and brought home a 3.5in Diskette and it loaded Netscape Navigator with my info all filled in for email, Usenet, Webpage publishing and a few Bookmarks to get started. I still use SeaMonkey for my email because it still has email addresses from the 1990's. I have Thunderbird for email on my phone. Anyway, thank you for all your work over the years. Rocky, [redacted email from community support forum]

First know that I have threading turned on. I am unable to find how to thread several email messages that I know are related. How can I do that even though they may not automatically be threaded by certain wording? Thanks Russ Pond

The full error message is: "The procedure entry point ?WindowsBCryptinitialization@mozilla@@YA_NXZ could not be located in the dynamic link library C:\Program Files\Mozilla Firefox\xul.dll."

After accepting that, I get another message that says: "Couldn't load XPCOM." Then, it just quits, with no Crash Reporter dialog.

I downloaded a fresh installer, but it takes a couple minutes to even launch, and then just sits there for a long time on the initial screen doing nothing before saying the installation failed. I've restarted my computer twice hoping it was a one-off issue, but there's no change.

According to the file information, xul.dll was last changed September 3rd, so it may not be the source of the issue. Perhaps whatever name mangling is responsible for the above entry point changed and now they don't match?

I have automatic updates set to "download but don't install", so it downloaded it a few days ago and I just restarted it this evening and the issue occurred. I could understand that maybe something got corrupted during the update, but I have no idea how the installer could also be failing.

I recently updated my Firefox to v158 from v156, and now the text colors of some of the UI elements on a new tab (e.g. Firefox wordmark, web shortcuts, Recent Activity header) which were previously white, have been changed to black (or a color close to black).

I use a custom wallpaper for new tabs, which didn't alter these particular colors on v156. Switching the background in the Customize menu shows the white text on some of the default wallpapers and the dark text on others. I have attached example screenshots to show how these elements looked before and after the update. I used the Developer Tools console to do this.

I assume this has to do with the "modernized" Nova UI redesign (which I have disabled) Mozilla is now forcing on its userbase instead of making it optional. Reverting these properties via the Developer Tools console does not make them permanent. I would rather not have to change my current wallpaper if I can help it.

Is there any other way I can make the text white again without changing the background or downgrading? Or if I can make them permanent with the console?

Hello, We are writing to report a technical issue on behalf of the State Educational and Methodological Institution "Educational and Methodological Office of Bobruysk" (email: [redacted from public] @uobobr.gov.by). An interface failure occurred in the Mozilla Thunderbird program starting on October 9, 2026. Specifically, the "Attach" (Вложить) button has stopped working and does not respond when clicked. Could you please help us resolve this issue or provide guidance on how to fix this interface glitch? Thank you for your assistance. Best regards, The Team of the Educational and Methodological Office of Bobruysk

So I'm helping sort out an individual who is very computer illiterate and I'm getting them to use Firefox.. but when it updates, the window that tells you what's new pops up... now this is helpful for most! but for this individual it really confuses them and they tend to call me about it every time... so I'm wondering if their is a way to disable the popup window, to make it less confusing for them without disabling the updates entirely?

Как сделать так чтобы при открытии ссылок с панели закладок они открывались в новой вкладке а не в той которой уже что то открыто,типо если у меня активная вкладка ютуб и я хочу открыть твич то при нажатии на твич закладку он откроет в вкладке ютуба тем самым ютуб пропадет и все пипец.В настройках не нашел чет насчет этого ничего,если это нельзя поменять то я ржу и удаляю этот браузер

Today TB froze during start up. No problems yesterday.

I deleted global-messages-db.sqlite and restarted TB. Now it is frozen with a "Loading messages". Maybe it is rebuilding indexes and this takes a long time and I should be patient.

Maybe my In and Sent mail boxes are too big? If so, how can I safely prune them?

TB is becoming increasingly unstable for me. It was very reliable before about a month ago.

I doubt my AV is the culprit because AV has not changed today.

Thank you one and all.

In the last couple days, I am not receiving messages in my email account inbox (att.net/yahoo). Messages are going directly to the local inbox folder. Windows 10.

When I search for new emails in the local folder, they are tagged with a gold diamond, and my option is to "Move to inbox again," which does move the messages back to the main inbox. But, "again" implies that the message arrived in the account folder, but got automatically passed to local folder. On or two occasions, I noticed an very fast dowloading to the inbox, which disappears immediately.

And, I get no response in my email account when hitting F5. F5 works for the local folder, and other accounts, and Shift-F5 (getting messages for all accounts) updates the others, but not my main email account.

The issue is not with att.net/yahoo. I have checked all my settings and server settings in Thunderbird, done the folder repairs several times, closed and reopened Thunderbird many times, deleted Inbox.MSF, etc., but nothing works. The issue seems to be specific to Thunderbird. Any ideas?

I use POP. I download and keep all my messages received and sent, and have the server delete after a set period. However after installing Thunderbird I've noticed my sent folder is only 6 months old. It should be 15 years! What has Thunderbird done with my messages and can I get them back?