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Thunderbird Error Message (attached). Sending of the message failed. The message could not be sent because connecting to the Outgoing server (SMTP) cs15.uhcloud.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again.

What is the phone number for support?

Hi I am having problems with Thunderbird, i’m not sure if it’s to do with a windows 11 update or something else. Thunderbird is not responding also at the start of the ‘not responding’ emails from one of my accounts disappeared and then gradually started to reappear but didn’t get up to date and now just not responding st all. I have tried various things to resolve this, uninstalling and reinstalling Thunderbird, doing this and opening my pc in safe mode, doing this and opening Thunderbird in safe mode. Deleting and reinstalling the latest windows 11 update, reinstalling the latest Thunderbird update. I don’t know what to try next? I read somewhere to delete your profile, after saving it, and getting a new profile but no idea how to do this. Any help appreciated.

We are using a website designed for Firefox, and when we use the "print" function within the website tool bar, on one of our PCs, it always defaults to a print preview which states "Printing from Win32 Application - Print". We have "print.always_print_silent" set to true, on this and all of the other PCs using the website, but only this PC has the issue. We can't figure out what is making it pop up the print preview.

The Site Notification for Firefox for Android is broken (don't know if it's just me) I have a notification for IGN website but Whenever I click on any site notification I received it always open a " about:blank " page rather than the actual website.

My phone model is ZTE Blade V50 Vita ZTE 8550 Running android 13

Some emails load. A lot of emails don't load. Some emails display this: --Apple-Mail-B985F741-BA19-4710-B64A-F6CFF1D3DAF9 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit

Sent from my iPad --Apple-Mail-B985F741-BA19-4710-B64A-F6CFF1D3DAF9--

Hi, this issue has been present for a long time for me, and with many versions of Firefox Nightly for Android.

I'm always using the latest nightly for browsing Youtube only, with a set of specific settings and addons (since we can't use profiles on Android yet)

My problem is I've configured the Homepage to never show anything but a few URLs I chose to pin, you can see my settings and my homepage in the screenshots attached.

Despite the "Recently visited" setting being disabled, sometimes, but not everytime, the last pages I visited are added to the Homepage, after the pinned sites. I have no idea what triggers it or not, if I'm doing something wrong or if it's a bug.

Thanks for your help !

Previously, for years, selecting and deleting groups of emails took only seconds. For sometime now, the more emails selected to delete as a group causes the amount of time to do so to become longer and longer. Minutes go by. It feels like instead of dealing with all of them at once, it's deleting one at a time, but that's just a guess. What can I do to get back to where it used to be? Thank you.

I keep several email tabs open that have topics I am currently working on with clients. Recently they have been turning blank, so I have no idea what they are--I feel I have lost info that I need to do business. Why do they turn blank? I need this fixed ASAP!

IF I SEND AN EMAIL TO MYSELF, JUST ONE WORD AS A TEST, I HIT "SEND", AND IT IMMEDIATELY GOES AND ARRIVES, AS PER NORMAL. FINE. IF I SEND EXACTLY THE SAME ONE WORD EMAIL TEST TO, FOR EXAMPLE, MY WIFE, OR ANY OTHER INDIVIDUAL RECIEPIENT, IT TAKES A LONG TIME TO EVEN SEND. I GET A PROGRESS BAR AS IF I WAS SENDING A LARGE RAW FILE OR SOMESUCH. LIKEWISE IF I SEND THE EMAIL TO ME AND CC IT TO ONE OTHER PERSON IT TAKES AGES TO SEND. ONLY AN EMAIL TO MYSSELF ALONE WORKS AT THE USUAL SPEED. MY BROADBAND SPEED IS FINE. I HAVE USED THUNDERBIRD FOR YEARS ON DIFFERENT LAPTOPS AND DIFFERENT COMPUTERS WITHOUT THIS ISSUE. I DO NOT KNOW WHAT TO DO, CAN YOU HELP?

We have recently moved to a new mail server. We currently have about 20 Thunderbird email clients on Windows in an office location and a macOS home machine. On all machines email is configured to use IMAP on hostname.com port 993 SSL/TLS with Normal Password and SMTP on hostname.com port 465 SSL/TLS with Normal Password.

The home machine is working 100% with no issues, it does have a much faster and lower latency internet connection than the office machines.

Many of the office machines are experiencing intermitent SMTP error messages when sending, intermitent, "unable to save mail in the Sent folder of the Inbox", messages and intermitent unable to move messages between folders.

I have checked and double checked the settings on affected machines - however, I believe a settings issue would result in nothing working, not intermitent functionality. Plus all is working fine on the home machine with the same settings (different OS, but ports and security settings all dictated by server).

With one client behaving properly, the server likwise behaving properly when addressed by the working client and the intermitent nature of the problems we are finding, I suspect we have some sort of network issue. Somthing timing out or a firewall/AV software causing a delay.

I have increased mailnews.tcptimeout on affected machines to 250 based on a forum article but this has had no effect (No idea of units here but if it is seconde then I am not supprised - the SMTP errors, when they happen are almost instantanious).

Any ideas on how to trobleshoot this problem further - The problem seems to get worse through the day, although that may just be peoples tollerance of an intermitent issue going down.

I posted about a month ago that I was having problems with logging on various websites with FF. A reader had me uninstall/reinstall and that fixed the issue. Now it's back again. I get error messages like "something went wrong" when trying to logon to various websites, or told to reload, but it just keeps happening. It's a bit random. No problems with Edge. I need this solved to use FF.

I just installed a totally new version of Thunderbird . I have a lot of black fields on screen, can't see any text of mail accounts and emails. Must be something in windows settings I guess, but I am not able to find it since december 2023... See the screenshot: Perhaps somebody can tell me what to do...

Lately when opening multiple tabs in a folder on E-Bay, often this error msg occurs on the later opening tabs (folder of 60 tabs)

E-Bay says try Chrome browser, but that browser does not import the folders needed.

Years ago doing this solved slowness problems: Control panel/Internet Options/General/Browsing History/Settings/set disk space to use to 1024.

The browsing history would be deleted before the computer would be turned off.

E-Bay says try Chrome browser, but that browser does not import the specific folders needed.

Edge used to not allow folders with tabs.

I have divided the folder of 132 tabs, where this problem started, into two folders of 72 and 60 tabs, still happens about every fifth time the folder would be opened.

Any fix from Mozilla?

Hello there. I'm used to pressing Super(Win key) + Grave(`) to type "`" because the Grave key itself is a global shortcut for opening the terminal window. It works as expected in the other applications, but not in Firefox input fields. If the site is capturing the key presses, it will handle the super + key as usual. For example, GitHub will surround the selected word with ` symbols on grave key press. This problem is not limited to super + grave, but any other letter. For example, Super + q is expected to produce the letter "q", but in Firefox it produces nothing.

I'm trying to identify why the Super + key behavior in Firefox is different from other systems and if I should open a bug or not. Maybe this is the same bug as https://bugzilla.mozilla.org/show_bug.cgi?id=1626609. Thunderbird has the same problem.

Firefox: 123.0.1

Dad had an email hosted (don’t know through who but his email address after @ is his name) and computer is now dead. He used Thunderbird. How do we get new computer setup with his emails from that email server? We don’t know password or imap / pop3 info.

Hello,

I have just done a clean install of Firefox and this went fine, the issue I am facing is that I find Firefox runs slow and some pages of a webpage do not load up. I am running windows 10 22H2.

Any help would be appreciated

Thanks

I tryed Firefox 115.8.0esr and 115.9.0esr 32Bit on Windows 7. (78.15.0 works) Firefox crashes(the whole program, i mean no tab) on "about:support" or some pages on support.mozilla.org like https://support.mozilla.org/de/kb/firefox-leistungseinstellungen always reproduceable.

I disabled all Addons, i disabled this power optimizion setting, removed usercrome.css same. With Firefox savemode it dont crash. Spyware is blocked, means datareporting/telemetry/ping by disabling the options and empty the urls (like on FF 78 but it dont crash). Somewhere i read firefox can crash on a empty url, but i assume its fixed long time ago. A wrong, unreachable or empty url should not crash on well programming. Think about countrys that blocks urls, adblocker, pihole and so on. I dont remember about what url i read.

Does the savemode revert all about:config settings? What does support.mozilla ask the browser that causes the crash? It know it seems to identify the Browser, but usual its done by useragent and no "internal" communication.

Then FF always crash on ebay.de search if you scroll or change settings while the page is not ready. Spyware is too blocked by Hardware, ebay may wait for some ad? But thats already on FF78 but on 115 it seems more often, this was not with FF 52. But some sites including ebay stops to work with FF52/78 so no choice.

hello Every time I open Thunderbird, i get different random error messages, changing settings doesn't help. I also get error messages every time it checks for messages also, this error message is wanting a new password, I haven't changed my password and these have only started since a couple of updates ago. It will still download the emails, I have to cancel out every message that pops up before it will. Any help is appreciated to fix this as it is rather inconvenient.