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I'm experiencing an issue with Thunderbird when trying to open attached PDF files. As soon as I double-click a PDF attachment, Thunderbird immediately shuts down completely. When I reopen Thunderbird and try again, the same thing happens.

I have already restarted my computer, but the issue persists. The only way I was able to open the PDF files was by accessing the email directly through Outlook.

Hi everyone! I have a couple issues that I'm encountering for an otherwise solid experience.

1. Scrolling with my touchpad or touchscreen on my laptop is choppy with Firefex while being smooth as butter using Edge and Chrome. It's on a specific website with a ton of pictures - Slickdeals.net. No problems with all other websites. The issue is w or w/o hardware acceleration.

2. I thought I found something great with Firefox's option to disregard a site's native font...so that my chosen option will override every site. Instead, it's showing up on only a handful of sites I use. More confounding is the fact that changing font size is not taking effect...when I choose 'reader view' those options work perfectly but going into the main settings just won't act accordingly. I'm also on the Microsoft forum talking about help with a virus but I'd like to know if anyone else is struggling with this...thanks!

-Travis

On Saturday morning 27 June 2026 I tried to login my Orcon email account via Thunderbird (which I have been using for a long time). But my login didn't work, I got a message saying "login to POP3.orcon.net.nz with username habitation failed." On 30th June 2026 I reported the problem to Orcon.

Orcon gave me the following settings for Thunderbird. I have done that and even made a new account: Incoming Server Type: IMAP Mail Server: imap.orcon.net.nz Port: 143 SSL: Off Authentication: On (username and password required)

Outgoing SMTP Server: Mail Server: smtp.orcon.net.nz Port: 25 SSL: Off Authentication: Off

Since then I have spent many hours and going around in circles with Orcon's Technical Support to resolve this, but no luck. They blame Thunderbird. I used Thunderbird Troubleshoot Mode. The message that comes up reads: login to server mail orcon.net.nz with username habitation failed. Please can you check that your server settings above are correct? And if there is a bug? Irma

firefox nightly got update with new look

and there is no "Legacy" option no options for accent color,rounding scale, etc.

i hate it please help me or help me with downgrade

Since this latest update to Firefox 153.0, anytime i press the CTRL key (either left or right) it automatically starts zooming in the webpage im on. Nothing is wrong with my keyboard and this wasn't an issue before this update.

Using version 153 on Windows 11. I have never been able to activate the VPN. I have tried ALL of the suggestions on the support site, permissions, policies, customize toolbar, etc. There has never been any icon to activate. Obviously, this has been going on for months. Thanks.

Hi, firefox: 153.0 Yesterday evening I put 3 tabs in a "group tab" I decided to call "ARS".

This morning I don't see how I can re-open this group tab. Many topics speak about a button "list all tabs". That button doesn't appear in my firefox (even when I have 50 tabs open). I tried the "customize" menu of firefox and "got back to factory setting", but it is still not there.

When I go to the contextual menu of a tab, I see that I can add it to a new container or the "closed group tab - ARS". When I do so for a tab, it closes. (I'm not sure it's normal.)

At this point, I really just want to remove the tab group (because I already re-opened the tabs... it took 5s, fixing the problem is now entering the 20'...) but I don't see how I can do it. It appears nowhere. I even "deactivated the group tab" feature and then reactivated it... the "ARS" group tab still appears in the "closed group tabs" submenu.

Thank you for the information.

If you are using the release level of 153, and prefer not to see the Thundermail menu entry, do these two things:

Add this statement to the userControl.css file: /* ##### Stop display of Thundermail menu item. */ @media not -moz-pref("mail.accounthub.thundermail.enabled") {

 #tbpro-menu-id-root { 
   display: none; 
 } 

}

Set this entry in Config Editor to FALSE: mail.accounthub.thundermail.enabled

I think everyone knows how to get out of full screen mode by now, so can you either remove it or let us disable that little box that always shows when you go full screen for a video?

Recently a "gear" icon has appeared on the bottom left of my screen while using Mozilla. It relates to moving the tabs. I don't want to do anything with my tabs. How can I get rid of the icon? The icon reduces the horizontal screen space available. I have a small laptop so this small amount of space is important.

Thanks for your help! Cindy

Prelude:

1. I have several email addresses in Thunderbird.

ISSUE:

1. One address, the first on the list, Draft folder shows "1"
2. View email Shows "No message found"

QUESTION: I like to keep a tidy Thunderbird - how might I fix this issue?

Thanks for the read, ~r BTW - this seems to be the last of the gremlins since my migrating - - Thunderbird - - Yea! :)

I read the article about having 50 GB of free VPN use after I updated Firefox today to version 149.0; however, I don't see anywhere where I can enable the VPN. I've checked in the "Customize Toolbar" section, and I still couldn't find anything. I don't understand, the article made it sound like I should have access, but I've also read that it's not out for everyone yet?