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I get to the point when a window to authenticate my log in appears. But it is blank. I copy the link and select all info to let thunderbird see but then Firefox fails to sustain connection to localhost and MS Edge also fails.

I don't know why. I disable firewall and still problem.

After working normally for more than a year, last week when I started Thunderbird there was a popup page with an error message that kept repeating itself "Sorry, we're unable to communicate with our sign-up server. Please check your connection." And behind this error page was the main Thunderbird frame with tool bars, but nothing else. All the email and email folders had disappeared.

I have the same Thunderbird setup on my upstairs desktop computer, just like this one, and it's working perfectly. And no connection problems anywhere, I also have other email programs that are working normally.

What does this problem look like? And is there a way I can check the profile to make sure the email and email folders are still intact. Is there a way to know if the profile is corrupted, and does Thunderbird keep duplicates of the profiles?

I'd appreciate any troubleshooting help...

John

Suddenly this morning, I can't send an email through Thunderbird, but I can through my email service provider's platform. No settings have been changed and I have the most up to date version.

I get this message:

"Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) (my account) failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again."

I am not at all tech savvy with this type of thing, so I need step by step, easy instructions, please. Thank you!

I add this to my settings question of earlier this afternoon but I don't think it's settings. I signed into att at 5:45 to find four identical messages from att about a sign in at 5 pm (which was me). Then I went to Thunderbird and, instead of my mail boxes under my email address, there were three empty folders all entitled !%26! followed by an endless string of capital As. Have I lost every thing? Have I been hacked so quickly? Can I recover my mail boxes?

Hope I hear from some one. Thank you. Marjorie

I don't know how to retrieve my prior question which was about Thunderbird not being able to retrieve my messages even though I had thought I put my new att password into the right spots.

I'm on Thunderbird (128.6.0esr (64-bit)) on Fedora/GNOME. I've noticed, that whenever I launch Thunderbird, it takes several minutes (!) where it says "Connecting to mail.myserver.com" in status. I'm using my own postfix/dovecot server with imap and I don't have this problem on Thunderbird Windows for instance, where it connects right away on startup. After the initial slow connection, it works just fine, when I manually trigger to scan for new messages (instantly). I tried literally any option within Thunderbird to fix that, without any success. It seems to be some trouble with resolving / dns or probably ip6/ip4, but then again, why would it work normally after the long connection time in the beginning? Any clue what might be the problem here?

my isp no longer supports Thunderbird. When I try to log onto my thunderbird account it won't let me connect to the server. I can check my email by logging on to their website and using their email program, but I would like to keep Thunderbird. I have been using it for year. Is there a way I can get their server to recognize thunderbird when I try and log on to it. The ISP is Breezeline....thanks

Hi, I cannot any more access Yahoo webmail using Thunderbird (140.3.0esr (aarch64) on Mac laptop (Ventura 13.3.1 OS). When I tried to login directly into the webmail server via Firefox to clean the spam folder I was asked to change my password which I did and that works fine. I could change the password on iPhone Mail by first deleting and then making a new Yahoo account with the new email and that works too. I changed the password in Thunderbird following the web advice for two hosts found in the menu: mailbox://pop.mail.yahoo.com and oauth://login.yahoo.com (mail-w) - which one should be kept? After that, when I tried to get messages the following info appeared: "Host contacted, sending login information..." but the contact was not established. First, I use POP3 protocol for Thunderbird and, I believe, IMAP for iPhone Mail. Second, a brief web search suggested that similar problems occurred in Thunderbird before so I hope it will be relatively easy to solve this problem. Thank you.

I sent a request for help and got this response:

"Well you might start by actually advising what the error is. We are at this point left to guess what "When launching Thunderbird, I get a pop-up saying Server "outlook.office365.com" reported en error" means and I can assure you it is not much to base a guess on. What is the message verbatim?"

You missed the point entirely! The point is that there NO ERROR CODE REPORTED, only the cryptic information I sent earlier. Further, if I knew the error code, I could fix it myself. The question is whether there is some kind of a log file kept in Thunderbird that may shed some light on the problem. Hopefully, now you understand the problem and can respond in a more meaningful and professional manner.

Some additional information: (a) sometimes email does not send, (b) I have already reinstalled T-Bird with with the mystery error continuing, (c) no errors were reported during installation. If there is no log file that T-Bird keeps and if you have no way of helping me track this down, T-Bird has ceased to be a practical alternative to Outlook.

I know little to nothing about computers. My Mozilla account says it is disconnected whenever I come online. I do not manually disconnect ever. Keeps telling me that it cannot detect proxy even though my proxies are set to off.

My host institution recently made a contract with Google and now we all use Google Workspace; our institutional e-mail server (Zimbra) is replaced with GMail. My full emailadress is the username, and then Google forwards one to a log-in-page of the institution via OAuth2.

At the institute I use Thunderbird on WIndows, and it is able to access the new account, as expected.

But here at home, where I use Linux Mint (Ubuntu/Debian based), also with Thunderbird, it doesn't work. I think the configuration is correct (it is identical to the one I use at the workplace) (first attached screenshot)

But when it's supposed to open the institution's authentication window, it gets stuck in a previous step, which is the Google window that should pass/redirect to the institutional log-in window via oAuth2. (second attached screenshot)

But instead, from here it goes to an unknown error, according to Google. (third attached screenshot)

I don't know what functionality I possibly haven't installed or activated in Thunderbird here at home, but which is functional on Windows? Or whether some security/privacy switch of Thunderbird or Linux' firewall or whatever, is 'on' and is blocking the redirection to the third-party log-in window?

How do I (in)activate or change what needs to be (in)activated or changed? Any ideas? Where can I look for this information? I scanned the questions on OAuth2 here, and none seemed related to what I experience.

It's important for me that I access my work email from home. Please help.

Under Inbox | Trash in my TBird account is a structure

2019
  subfoldername
     sub-subfoldername

in italics, in gray letters. When I try to delete it, I see "The server replied [Nonexistent]" and the structure disappears; until I close and reopen TBird, and there it is again. When I select "Empty trash" I get no error message and the structure disappears; but it reappears on reopening TBird. How can I make it gone gone gone?

Thunderbird suddenly can't connect with my email servers. A box from Xfinity pops up: • Xfinity: Sign in with your Xfinity ID (for ***@comcast.net) • but when I do: Access Denied You don't have permission to access http://login.xfinity.com/login on this server. Reference #18bffcc317.1734841179.1c89c1f5 https://errors.edgesuite.net/18bffcc317.1734841179.1c89c1f5

Also Thunderbird error messages: • Authentication failure while connecting to your server imap.comcast.net And Thunderbird error message: • ~Connection to yahoo timed out And my Inbox messages don't show

Please help. I see no cause for this, didn't download anything today. Thanks, Lynn

So I have a self hosted Exchange and I have no problems using it from apps like Google Mail, Outlook and such, plus I can login directly to its .../EWS/Exchange.asmx through a browser. However, when trying with Thunderbird 145/Linux, I always get that username or password are incorrect, but it doesn't tell me exactly what went wrong and how it tried, so I'm in the dark why it is happening. Note: exchange's url is on a different domain than my account.

Basically it's either this message: Authentication error.

Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIMsgAccountManager.createIncomingServer]

Or similar if I try to get message from inbox.

Also weird things happen during configuration, like attached image (note that I've tried different URL permutations)

TLDR; how do I diagnose the issue, or ever better, how to connect? TIA

A recent update from Norton 360 stopped my email accounts from connecting (123-reg and gmail). It was refusing to recognise certificates from the relevant sites. I have reported this to Norton, but in the meantime I have had to disable Email Protection within Norton 360 in order to get things working again.

Hello All, We've used Thunderbird for a long time now. We recently added a few more computers to the office.

When we try to add an email account via File>New>Email Account We fill in the two fields and click to proceed and the swirling circle just keeps going forever.

As a test we tried to add extra email accounts to our existing computers and the same thing happens.

All thunderbird versions are: 140.2.1esr (64-bit)

When i google this problem it suggests adjusting the firewalls or antivirus settings. It just seems strange that this problem would start all of a sudden.

thank you for any help. zac

Trying to set up a new email account in Thunderbird I go to the Account Hub, enter the name and then the email address of the new account and select <Continue>. There then appears a greyed-out box showing "looking up configuration" with the usual turning circle indicating waiting for a response. After three hours still greyed-out with the turning circle and no response. I have tried several times. Please advise a solution

Hello, I want to convert my POP account to an IMAP account. I am following the procedure for creating a new email account. I enter the account name, email address, and password. But at the end, I always get the following message: Authentication error. Unable to connect to the server. The configuration, username, or password are probably incorrect.

Please note that I am using the same name, email address, and password as for my POP account, as recommended in the online help.

Best regards Dominique Chevalier