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I have had an ongoing problem with Thunderbird being unable to log into the various mail servers that I use. I've tried repeatedly to solve this problem and have been able to cure it in the past by clearing the cache, but it recurs over and over again. I cannot keep wasting my time like this. I'm an independent contractor and I need to be able to use my e-mail client consistently. I've got work to do! This morning, it's suddenly decided that it cannot log into any of the three services that I use.

Is there a lasting solution to this problem? If not, please tell me and I'll move on peacefully, but please don't keep me chasing my tail for something that cannot be fixed.

Hi, I used Thunderbird on a portable computer in installing automatically my mailboxes without issue. Then the systems suggested me to upgrade to Windows 11. I did.

But since that time I can not more use Thunderbird because it cannot set up my mailboxes on outlook and a specific national operator.

Is there an issiue in usign Thunderbord under Windows 11 ?

Tks.

I am unable to get my email to work - when I open Thunderbird I get the message "500 something went wrong and we couldn't complete your request". New emails aren't coming through on my computer, nor can I delete existing emails. I can however still send and receive on my phone, which is weird.

Current Behavior When Firefox is set to offline mode (File → Work Offline), the Developer Tools Network tab does not display request body of requests that web applications attempt to make. This creates a significant gap in debugging capabilities, as developers cannot inspect request payloads details that would normally be visible.

Requested Enhancement Enable the Network tab to capture and display attempted network requests payload even when offline mode is enabled

I am trying to add my gmail account to Thunderbird, with the normal procedure. It immediately gives the correct settings with OAuth, send me to Google to get the permission when confirming these, then displays «Unable to connect to the server. The configuration, username or password are probably incorrect.», although I have double checked all of these. The same thing happens to a friend I am trying to help (with the latest Thunderbird version available) (140.2.0esr on Ubuntu 24.4.3 in my case). I wonder what happens, as I used to install Thunderbird and add accounts easily, from Google or other services, on a number of people's computer, a few months ago.

Hmm. We’re having trouble finding that site.

We can’t connect to the server at data.digital.costco.com.

i have problem with setting up my proxy. i choose manual proxy configuration, fill the HTTP Proxy & port. When i click ok then input username & password but it keep asking for the username & password. (I have asked the proxy provider they say the proxy is good, no problem)

I have been a Thunderbird user for over 10 years and recently my employer has started switching us over to Google Workspace emails. I'm trying to add the email to Thunderbird, but keep getting a blank gray screen (Image 2) in the Google pop-up after clicking "Allow" (Image 1). No error messages are displayed anywhere in the pop-up or in Thunderbird.

I have tried several times with no success. I've tried rebooting, same issue. I've tried disabling all the plugins in Thunderbird, same issue. I've let the screen sit there for over 20 minutes and nothing occurs. I even tried one-time hitting "Deny" and got the same blank screen.

As it is occurring inside Thunderbird itself, I have no way of telling what is going wrong. I know I am signing into my new Google account successfully as I wouldn't reach the page with "Allow".

Anybody know what I can do?

https://read.amazon.com/kindle-library is now not allowing me to go onto the website. I've tried talking to Amazon customer support but they can't find a problem on their end. It says:

The connection has timed out

The server at read.amazon.com is taking too long to respond.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

I haven't had a problem with the website before and every other website I have tried works fine. It's just that one. I have added it to my exceptions list for add ons but it didn't fix it.

The proton bridge quit working and I can no longer get my proton mail in Thunderbird. I open the proton bridge and it just says connecting. After 24 hours I would think it would have connected. My internet connection is working. I hate Windows 11!

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.

Unable to connect

Firefox can’t establish a connection to the server at mesp.finance.gov.bd.

   The site could be temporarily unavailable or too busy. Try again in a few moments.
   If you are unable to load any pages, check your computer’s network connection.
   If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the web.

Thunderbird couldn't connect to ATT/yahoo mail with the error "Sending of username did not succeed. Mail server inbound.att.net responded: Unsupported SASL mechanism." I am totally unfamiliar with this issue but know it involves an encrypted password. A net search so far is of little help though I did run into a statement that windows doesn't have this issue. I use linux and searching my package manager I find quite a few SASL mechanism plugins (who knew?) but no way to differentiate any. ATT's site is useless. Is anyone here familiar with this problem? In the meantime, I see 1 called login mechanism plugin - no, thats deprecated of course, says use the plain one so its that one for me. Tnx...

Been using Thunderbird for years with these accounts. Just today outlook accounts failing to login. Accounts do not receive email. Can not send email. Checked server settings, which were unchanged and obviously worked previously. Tried deleting passwords in password manager and re-entry. Failed. What's up with the outlook connnection?

(Sorry if the wrong area.)

I'm curious and play with Node-Red a lot.

Just now I am playing with the `http-request` to explore web pages.

I press the `F12` key and the tools pop up and I go through some basic things.

I see/get just about nothing. See pic (Don't know to make it inline.) But the name says it all.

So I've pressed the `F12` key, clicked on the NETWORK and REFRESHED the page.

Now with Chrome.

Whole different set of stuff.

Someone - please. What's going on? I'm not understanding the huge difference with how things are shown.

Hello, I have problems to use Thunderbird client in my Win11 laptop. In late 2023 windows introduced modern authentication and after that I have big problems to have just any mail client to work. I used to use Outlook classic but that one failed I stared to test different clients e.g. Thunderbird, Mailbird, emclient but with no luck! My feeling is that it has to do with my Windows 11 installation. The process always fails when trying to log in to the IMAP server. When googeling around my impression is the Thunderbird should do it - but sadly not in my laptop.

I decided to dive into the details and try to find why it fails, so please see below analyse.

Regards Stefan

Problem description: Thunderbird 128.6.0esr(64-bitar) works in Windows 10 environment but same thunderbird version fails to log in to IMAP-server in windows 11.

Analyze logging created using .bat file with: set MOZ_LOG=IMAP:5,timestamp

       set MOZ_LOG_FILE=%USERPROFILE%\Desktop\imaplog
      "%ProgramFiles%\Mozilla Thunderbird\thunderbird.exe"

Observation: Windows 10 where login works: 2108499af00:imap.privat.bahnhof.se:NA:ProcessCurrentURL:imap://mb111111@imap.privat.bahnhof.se:993/select%3E.INBOX: = currentUrl

Windows 11 where login fails: 243f98e5900:imap.privat.bahnhof.se:NA:ProcessCurrentURL:imap://mb111111@imap.privat.bahnhof.se:993/select%3E%5EINBOX: = currentUrl %3E = ”>” %5E = ”^”

It looks like the dot (.) has been incorrectly coded. Is this difference the problem and is it connected to windows 11 or?

Details from logging:

Windows 11 Home Version 10.0.26100 Thunderbird 128.6.0esr(64-bitar), Norton 360 2025-01-14 13:07:06.320000 UTC - [Parent 6448: IMAP]: D/IMAP ImapThreadMainLoop entering [this=243f98e5200] 2025-01-14 13:07:06.320000 UTC - [Parent 6448: IMAP]: D/IMAP ImapThreadMainLoop entering [this=243f98e5900] 2025-01-14 13:07:06.337000 UTC - [Parent 6448: Main Thread]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:SetupWithUrlCallback: clearing IMAP_CONNECTION_IS_OPEN 2025-01-14 13:07:06.338000 UTC - [Parent 6448: Main Thread]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:SetupSinkProxy: got m_imapMailFolderSink 2025-01-14 13:07:06.338000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:ProcessCurrentURL: entering 2025-01-14 13:07:06.338000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:ProcessCurrentURL:imap://mb111111@imap.privat.bahnhof.se:993/discoverallboxes: = currentUrl 2025-01-14 13:07:06.338000 UTC - [Parent 6448: Main Thread]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:SetupWithUrlCallback: clearing IMAP_CONNECTION_IS_OPEN 2025-01-14 13:07:06.338000 UTC - [Parent 6448: Main Thread]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:SetupSinkProxy: got m_imapMailFolderSink 2025-01-14 13:07:06.338000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:ProcessCurrentURL: entering 2025-01-14 13:07:06.338000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:ProcessCurrentURL:imap://mb111111@imap.privat.bahnhof.se:993/select%3E%5EINBOX: = currentUrl 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: V/IMAP ReadNextLine [rv=0x804b0014 stream=243f9f9d840 nb=0 needmore=1] 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: clearing IMAP_CONNECTION_IS_OPEN - rv = 804b0014 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:TellThreadToDie: close socket connection 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: (null) 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: D/IMAP SetConnectionStatus(0x804b0014) 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: D/IMAP URL failed with code 0x804b0014 (imap://mb111111@imap.privat.bahnhof.se:993/select%3E%5EINBOX) 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: V/IMAP ReadNextLine [rv=0x804b0014 stream=243f9f9e1a0 nb=0 needmore=1] 2025-01-14 13:07:27.401000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: clearing IMAP_CONNECTION_IS_OPEN - rv = 804b0014 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5900:imap.privat.bahnhof.se:NA:ProcessCurrentURL: aborting queued urls 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:TellThreadToDie: close socket connection 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: (null) 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: D/IMAP SetConnectionStatus(0x804b0014) 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: D/IMAP URL failed with code 0x804b0014 (imap://mb111111@imap.privat.bahnhof.se:993/discoverallboxes) 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: D/IMAP ImapThreadMainLoop leaving [this=243f98e5900] 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: I/IMAP 243f98e5200:imap.privat.bahnhof.se:NA:ProcessCurrentURL: aborting queued urls 2025-01-14 13:07:27.402000 UTC - [Parent 6448: IMAP]: D/IMAP ImapThreadMainLoop leaving [this=243f98e5200] 2025-01-14 13:07:36.244000 UTC - [Parent 6448: IMAP]: D/IMAP ImapThreadMainLoop entering [this=243f37ae600] 2025-01-14 13:07:36.244000 UTC - [Parent 6448: IMAP]: D/IMAP ImapThreadMainLoop entering [this=243f4d0d400] 2025-01-14 13:07:36.247000 UTC - [Parent 6448: Main Thread]: I/IMAP 243f37ae600:imap.privat.bahnhof.se:NA:SetupWithUrlCallback: clearing IMAP_CONNECTION_IS_OPEN 2025-01-14 13:07:36.247000 UTC - [Parent 6448: Main Thread]: I/IMAP 243f37ae600:imap.privat.bahnhof.se:NA:SetupSinkProxy:

Windows 10 Home Version 10.0.19045 Thunderbird 128.6.0esr(64-bitar), Norton 360

2025-01-14 12:54:32.387000 UTC - [Parent 5892: IMAP]: D/IMAP ImapThreadMainLoop entering [this=21080d0af00] 2025-01-14 12:54:32.387000 UTC - [Parent 5892: IMAP]: D/IMAP ImapThreadMainLoop entering [this=2108499af00] 2025-01-14 12:54:32.422000 UTC - [Parent 5892: Main Thread]: I/IMAP 21080d0af00:imap.privat.bahnhof.se:NA:SetupWithUrlCallback: clearing IMAP_CONNECTION_IS_OPEN 2025-01-14 12:54:32.422000 UTC - [Parent 5892: Main Thread]: I/IMAP 21080d0af00:imap.privat.bahnhof.se:NA:SetupSinkProxy: got m_imapMailFolderSink 2025-01-14 12:54:32.422000 UTC - [Parent 5892: IMAP]: I/IMAP 21080d0af00:imap.privat.bahnhof.se:NA:ProcessCurrentURL: entering 2025-01-14 12:54:32.422000 UTC - [Parent 5892: IMAP]: I/IMAP 21080d0af00:imap.privat.bahnhof.se:NA:ProcessCurrentURL:imap://mb111111@imap.privat.bahnhof.se:993/discoverallboxes: = currentUrl 2025-01-14 12:54:32.422000 UTC - [Parent 5892: Main Thread]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:SetupWithUrlCallback: clearing IMAP_CONNECTION_IS_OPEN 2025-01-14 12:54:32.422000 UTC - [Parent 5892: Main Thread]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:SetupSinkProxy: got m_imapMailFolderSink 2025-01-14 12:54:32.422000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:ProcessCurrentURL: entering 2025-01-14 12:54:32.422000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:ProcessCurrentURL:imap://mb111111@imap.privat.bahnhof.se:993/select%3E.INBOX: = currentUrl 2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=210849f33e0 nb=242 needmore=0] 2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2017 Double Precision, Inc. See COPYING for distribution information.

2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=21084ddfba0 nb=242 needmore=0] 2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: I/IMAP 21080d0af00:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2017 Double Precision, Inc. See COPYING for distribution information.

2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.638000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.717000 UTC - [Parent 5892: IMAP]: D/IMAP Try to log in 2025-01-14 12:54:32.717000 UTC - [Parent 5892: IMAP]: D/IMAP IMAP auth: server caps 0x4c2325, pref 0x1006, failed 0x0, avail caps 0x4 2025-01-14 12:54:32.717000 UTC - [Parent 5892: IMAP]: D/IMAP (GSSAPI = 0x1000000, CRAM = 0x20000, NTLM = 0x100000, MSN = 0x200000, PLAIN = 0x1000, LOGIN = 0x2, old-style IMAP login = 0x4, auth external IMAP login = 0x20000000, OAUTH2 = 0x800000000) 2025-01-14 12:54:32.717000 UTC - [Parent 5892: IMAP]: D/IMAP Trying auth method 0x4 2025-01-14 12:54:32.753000 UTC - [Parent 5892: IMAP]: D/IMAP got new password 2025-01-14 12:54:32.753000 UTC - [Parent 5892: IMAP]: D/IMAP IMAP: trying auth method 0x4 2025-01-14 12:54:32.753000 UTC - [Parent 5892: IMAP]: D/IMAP old-style auth 2025-01-14 12:54:32.753000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:SendData: Logging suppressed for this command (it probably contained authentication information) 2025-01-14 12:54:32.796000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=210849f33e0 nb=16 needmore=0] 2025-01-14 12:54:32.796000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:NA:CreateNewLineFromSocket: 3 OK LOGIN Ok.

2025-01-14 12:54:32.796000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.796000 UTC - [Parent 5892: IMAP]: D/IMAP login succeeded 2025-01-14 12:54:32.796000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:A:SendData: 4 capability

2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=210849f33e0 nb=122 needmore=0] 2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:A:CreateNewLineFromSocket: * CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION

2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=210849f33e0 nb=27 needmore=0] 2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:A:CreateNewLineFromSocket: 4 OK CAPABILITY completed

2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.838000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:A:SendData: 5 namespace

2025-01-14 12:54:32.902000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=210849f33e0 nb=68 needmore=0] 2025-01-14 12:54:32.902000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:A:CreateNewLineFromSocket: * NAMESPACE (("INBOX." ".")) NIL (("#shared." ".")("shared." "."))

2025-01-14 12:54:32.902000 UTC - [Parent 5892: IMAP]: V/IMAP SetConnectionStatus(0x0) 2025-01-14 12:54:32.923000 UTC - [Parent 5892: IMAP]: V/IMAP ReadNextLine [rv=0x0 stream=210849f33e0 nb=27 needmore=0] 2025-01-14 12:54:32.923000 UTC - [Parent 5892: IMAP]: I/IMAP 2108499af00:imap.privat.bahnhof.se:A:CreateNewLineFromSocket: 5 OK NAMESPACE completed.

Starting this morning, only one of my three Earthlink email addresses I have set up in Thunderbird is downloading email from the Earthlink POP server. I have verified there are messages using the Earthlink app and web mail. It seems to contact only that one email address host and not the other two. It seems it is not even looking for messages to download on the other two. If I right click on the email account in the left bar and select, "Get Messages", nothing happens in the bottom status bar for those two, but the third shows it contacts the server. All worked fine just yesterday. I am running Windows 10 and Thunderbird Portable. I am using McAfee AV. What can I do to get those two email accounts to work with the server again? Thanks!