All Products Community Forum

Hello, I was wondering if anyone has noticed that it takes super long for Thunderbird really long to open? and it is very slow to load an email the slows my whole computer down? This has been happening the last 2 days and am wondering if there is an issue with the newest update?

Thank you Cherie

Open thunderbird up and want to print an email. Most of the time the printer is the default. Once I print and then go to the next email to print, the default printer is gone and the only option is save to PDF. I can close thunderbird and reopen it and seems to alleviate the issue for a few times then back save to PDF only. Strange issue. I have reinstalled thunderbird a few times. All other programs on the pc I print from always use the defaut printer.

Hello,

we are a group of 9 people, organizing us with TAGs in Thunderbird (using same IMAP Mail). Before update to 115 version from 102 (I think) the tags were working flawlessly for more than 10 years. Now the syncing of tags somehow changed. For example if someone change the tag on received e-mail, on other computers the tag stays the same, until you click on that e-mail or until again a new e-mail arrives. That is very confusing because all the time you are not sure who's tag is selected or even more problematic that you untag someone who was already tagged. Before if someone tagged e-mail message, the tag was synced in next second, nevertheless at which e-mail were you standing. That was perfect!

I hope for implementation the option to manage tag-syncing time. Or can someone tell me if that's possible to manage that somewhere inside manual settings(Config editor)? I would also be pleased that somebody explain me how the tags synchronization actually works in latest TB?

Thank you all!

Adblock is unable to deactivate thumbnails appearing towards the end of a Youtube video! I've restarted FF but result is the same.

What is wrong? Any other alternatives?

Hello all, just yesterday I noticed my Yahoo inbox was not fully loading and even when it finished loading, I have had the same few messages showing, a series of just gray bars below that, no ads, etc. and will not allow me to delete or perform commands. When I check the box by an email it simply takes me to the email, as happens if I do so before it's fully finished loading. It is as if it is still trying to load somewhere in the ether land, since there is no indication on my toolbar that it's working. I've tried everything except removing it from Firefox. I thought it was my internet service but all is fine with other sites and Yahoo mail works fine on Safari. It's never happened before. Many thanks for your help.

I'm using my Firefox with Custom CSS with toolkit.legacy thing enabled. I'm using Firefox for my everything and I love it. But It keeps break my current profile then starts a new profile that everything has been reset. It keeps break my profile and starts a new profile. I lose everything... It's enough for me. I could not find any solution for it. If It's not fixed, I'll stop using this beautiful browser :'(

Hello everyone,

this here is a really odd problem and not one of the usual "firefox slow, internet bad" → "read the faq" problems as far as I can tell.

The problem: When using Firefox (110.0 64-bit Windows 10) I noticed already a while ago that downloads are slow, apparently frozen from time to time, websites took longer to load and looking at speed tests, I got really bad results. Furthermore, Firefox seems to slow down my internet speeds of the whole system, as I can observe in other applications which want to download or upload data. As long as Firefox is running (even if I am just in the default tab and doing nothing in Firefox) it slows the internet speed of the whole system down.

So I tried a plethora of things to fix this and I can rule out the following possible causes with high confidence:

• History, Cache, Add-Ons and so on: performed a clean re-install of Firefox, cleared all cache and history data, removed add-ons, reset to default, etc..
• ISP problem: performed repeated speedtests from other devices within the network, everything is fine within my local and wide area network, ISP does not report any problems
• Firewall & AV: turning on / off, even uninstalling, no effect observed
• Driver problem: driver updated, driver removed, used default Windows Driver, used Troubleshooter etc., nothing helped.
• OS issue: Nope. I even performed a clean new installation of Windows today, the problem remains. Furthermore: I ran the speedtests using Microsoft Edge and there are no issues (as long as Firefox is not running.)
• HW / System issue: Nopes again. I have used a live Ubuntu-image to cross-check whether the HW might be an issue, but running speedtests using Ubuntu and Firefox worked well.

I did not observe similar effects on other machines using Firefox under Windows in my network. So it seems to be a very specific problem within Firefox under Windows 10 on my machine.

By the way the machine: HP Pavilion Gaming - 15-dk0200ng CPU: Intel Core i5-9300H RAM: 16 GB DDR4-2666 SDRAM WiFi: Realtek RTL8822BE 802.11ac (via PCIe) (I also have an Ethernet chipset on this system, but since I have tested everything using only WiFi I'll omit the info here.)

So is this a bug of Firefox? Or am I missing something?

Attached are some screenshots of the disappointing test results using Firefox. (I have similar problems on other sites like speedtest.net or the speedtest of Google). As reference: I've got 500 Mbit/s downstream and 50 Mbit/s upstream. Usually these speeds are achieved from other devices (or other browsers on my system), or are at least within the top 80%. But what I get with Firefox is significantly worse. It's also strange that the speed goes up first, which is fine, but then falls down completely after reaching some point. A few seconds after that it goes up again, but much much slower.

Thanks in advance for any help!

I'm getting a message "Network or file access error". I see another question posted here for the same error, that refers to a gmail account. I have a gmail account but I don't use it with TB; my account is twc. I've been using TB for years and this is the first time I've seen this error.

Thanks for your help. SweetTasha (Phil)

If I lock my machine for more than a few minutes and then log on again, it's always the same. I unlock my system and feel some kind of slowness in Firefox. When I switch from the currently open tab in Firefox, the new tab is highlighted in the tab bar, but the content part of the window is frozen. If I quickly open htop, I can see that the main Firefox process is suddenly using about 130% of my CPU. The only solution I have found is to quickly open htop after unlocking the system, send a SIGKILL to the main Firefox process and reopen it. This way the freezing, slowing problem is nowhere to be seen.

I am running Debian 12 with Firefox 115.4.0esr (64-bit). I have more than enough RAM and CPU.

Hello,

When I try to log in to tradestation.com, I get a 403 Forbidden message. I have gone to Settings - Clear all History, and checked all the History and Data boxes, and clicked OK. Also, I only use Private browsing, which is set to remove all history, caches, etc. whenever I close Firefox. I have been logging in to tradestation 4 or 5 days a week for months, until today. Please help fix this.

Thank you, Barry

After upgrading to 115 I can't insert HTML. This isn't quite correct as sometimes it possible and sometimes not! Scenario 1 Click New message Click in the Body of the email type "qwerty" for example and enter for new line Then from the toolbar select Insert - HTML and type Hello for example Click Insert

Nothing is inserted into the email - not the font now says "Variable Width"

Scenario 2 Click New message Click in the Body of the email Then from the toolbar select Insert - HTML and type Hello for example Click Insert Hey presto Hello is inserted into the email

Can anyone explain what's happening, is it a setting or a bug? Remember this did not happen prior to 115 upgrade

BTW If I continue with scenario 1 and play around I can get it to insert HTML in the end using a combination of select All, change the font and insert at the end of the text not on a new line.

Thanks in Advance

Where can I get the bug fix for email jumping in the preview window? I understand that the fix has been created and tested. I downloaded what I think is the daily build, but, When I attempt to install it, I am told that I require windows 10. This is getting very aggravating. What took an hour before the upgrade now takes at least three hours for reading my email.

I check 7 different email accounts. Now when I check them and click on an email the whole section will go to the top or the bottom, Then I need to scroll down or scroll up to get back to the new emails. And different email accounts do different things. I use Windows 11 - 64 bit. I've really liked Thunderbird over the years, have contributed so I hope these flaws gets fixed. It's just so problematic to use it now. I don't have the time to spend hours searching through threads to find if it's even fixable.

Been using Thunderbird for years, seldom have problems. But starting to see the software frequently hanging in the last week or two. Most often, things will be fine, and I'll go to bed. When I wake up, the software is hanging, no messages have been downloaded for hours, the cursor is a small blue spinning circle, and the program is not responding. I have to force-quit with task manager, start it up again, then it runs fine for several hours, before doing the same thing again. Just now, I found it hung again, without having to go to bed first.

I have no way of knowing if any email is being lost during this time or not, but I have no reason to think it is. The problem is not anything major (force quit, then reload is not a horrible inconvenience), but I'd like to avoid the problem.

Only recent change is I created a new gmail account because one place I like to receive emails from seems to be having problems with my own domains' emails, but they don't work with the gmail account either ... go figure. The new gmail account seems to have no problems sending or receiving emails for the most part, but since this problem started happening within the last couple of weeks, and I added the new email in the last couple of weeks, could be connected.

When writing an email if I use the 'Insert>image' menu route the whole thunderbird app freezes (using win10, fully updated). However, if I manually copy and paste to insert an image via the clipboard, it seems to take OK. So have a workaround now, but worry the program route is failing. Am I missing a setting somewhere (I must say I have experienced glitches* since updating to the newest supernova version - 115 - and wishing I'd just stayed with the older previous version a while longer.

• Other glitch is the system is endlessly demanding passwords for my hotmail accounts when checking email (not so for the yahoo or gmail accounts). Very frustrating and time consuming.

Thanks for any advice Ken Dutton

After latest update to Thunderbird (115.4.1 (64-bit)), it's unacceptably slow. My mother also has new laptop and it's the same. Will need to migrate to Outlook if it's not fixed soon. Any help?

I've posted this before, but I can't seem to find it on here plus never got a response. This weirdness happens out of left field on multiple different sites but very infrequently and only when I'm using the most-up-to-date Firefox browser. I'll be surfing the web sometimes for hours, and then all of a sudden, the screen will start glitching. It seems like Firefox is also opening either copies of that page or last night it opened some from 2 years ago which makes no sense as again, I haven't visited them in 2 years (they're dated news feeds so I know when). So I'll have at least 9 tiny screens (they're not browser pages as there's no header or close button) full of either copies of what I was just viewing or old pages. Also, this causes my computer to have slow responses so it will take 20-30 seconds to get a mouse click to register (like trying to close Firefox or opening task manager). This requires a restart which almost always fixes the problem.

I have no malware, and before last night and this morning, I hadn't had this issue for over a week. This had started about a month ago after over a decade of using Firefox with 0 issues. This has been on numerous different websites too so it isn't just a bad browser interaction with one site's code either. This is on a fully updated Windows 11 PC with an NVIDIA video card and an I7 Intel 8-core processor.