Thunderbird Community Forum

Program : Thunderbird Build - 115.18.0 esr .

How to reproduce:

Log into outlook.live.com an ensure IMAP is enabled.

Start Thunderbird and create a new 'mail' account manually, given the account settings provided by outlook.live.com. (https://support.microsoft.com/en-gb/outlook/pop-imap-and-smtp-settings-for-outlook-com)

The account may have to be setup manually.

Also you may have to setup the outgoing SMTP server to use OAuth2 manually as an SMTP server directly, as the normal dialog presented during manual setup did not provide this option unless the servers were set up indvidually.

The e-mail account details should be set up.

What should have happened:

SMTP server should have permitted Ouath2 authentication during setup. Thunderbird should have presented a login to obtain a password, and retrieved messages to a local inbox.

What actually happened: "Authentication failure when connecting to server outlook.office365.com"

Possible causes :

• Build not actually supporting Oauth2 despite claiming to.
• Third party server is claiming to support IMAP/Oauth2 but refuses to recognise credentials sent by Thunderbird.
• Build too old.

Thank you.

The STAT command did not succeed. Error getting message number and sizes. Mail server pop.gmail.com responded: [SYS/PERM] Your account is not enabled for POP access. Please visit your Gmail settings page and enable your account for POP access.

I have read the question posed by a member wanting to do a similar move to the one I want to make and the standardised method that Mozilla publishes. My worry is :- If I download the latest TB program onto my new Win 11 PC, will it be compatible enough to receive all the files and emails I've saved to an external HDD, from my Win 7 PC? As I got burnt by eMClient's transfer of my emails, two years ago and lost 5 years of emails/contacts, I am naturally anxious about this same procedure in TB. (I transferred to TB, because of this and am very pleased with the way it is working on my Win 7 PC) Any hints and tips from anyone would be very gratefully received. John

Cannot send or receive email all of sudden in Thunderbird. When I the click the messages icon, nothing happens, and I get "Could not connect to server mail.twc.com; the connection was refused". When trying to send a m,message I get "Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) mail.twc.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." No settings were changed and everything was fine when I put the computer to sleep. This happens on both a Win 7 and 11 machine Email is a Time Warner (now Spectrum) Road Runner account (twc.com). Spent an hour with Spectrum, and they say this is a third party (Thunderbird) issue. A friend has the same setup, and is having the same problems that started at the same time. Win 11 version 150.02 Win 7 115.18.0 (latest available for win 7)

Appreciate any help....

Using Thunderbird 115.18.0esr Supernova 64-bit on Mac laptop OS 10.13.6. Worked fine for years, with ongoing Thunderbird updates, even though Mac OS is 32-bit. Suddenly, after 10/6/26 can't retrieve emails although I can see them on the ATT Yahoo server website. Can still send emails with Thunderbird. Inbound server settings are: POP server inbound.att.net, Port 995, SSL/TLS, Normal Password (I long ago created a Secure Mail Key, and even tried creating a new one). But inbound server name doesn't show in Saved Passwords (only outbound server with Secure Mail Key as password)? I have tried everything suggested, repaired my inbox folder, updated Thunderbird files, etc. in Profile as recommended. But still no prompt for password when attempting to get messages. Just shows "Done" at bottom left with no new messages received. But new messages are seen on server website. So it appears that Thunderbird isn't able to connect to the ATT Yahoo server to get emails. Why? And what else can I do? I love Thunderbird and want to continue using it.

In the last couple days, I am not receiving messages in my email account inbox (att.net/yahoo). Messages are going directly to the local inbox folder. Windows 10.

When I search for new emails in the local folder, they are tagged with a gold diamond, and my option is to "Move to inbox again," which does move the messages back to the main inbox. But, "again" implies that the message arrived in the account folder, but got automatically passed to local folder. On or two occasions, I noticed an very fast dowloading to the inbox, which disappears immediately.

And, I get no response in my email account when hitting F5. F5 works for the local folder, and other accounts, and Shift-F5 (getting messages for all accounts) updates the others, but not my main email account.

The issue is not with att.net/yahoo. I have checked all my settings and server settings in Thunderbird, done the folder repairs several times, closed and reopened Thunderbird many times, deleted Inbox.MSF, etc., but nothing works. The issue seems to be specific to Thunderbird. Any ideas?

I open Thunderbird and click on get messages and emails are not coming into Thunderbird from AT&T. It worked perfectly yesterday but today we are encountering this issue. There was no changes to the application since yesterday. Thunderbird is online I clicked the icon at the bottom it shows when it is offline. I contacted AT&T and they said things were working on their side. What are possible things I can do to fix this issue

Cannot receive and email because I am told by AVAST that the certificate for inbound.att.net has been revoked. I am not at all technical and at a loss as what to do. Please help! Thank you.

Why thunderbird needs a specific version ? Why the newest versions aren't compatible with windows 7 ?

I have more than 100 pc running mainly Mozilla tools on windows 7 which does the job perfectly. I don't want to pay $15000 fees for an unnecessary upgrade.

What new functionnalities windows 11 brings that prevent Mozilla to compile the same versions for all windows OS ? This forces people to abandon their windows 7 and to pay fees to Microsoft. I understand the later, he does his business. But why Mozilla helps it ?

Bonjour. Plusieurs onglets correspondant aux messages ouverts dans thunderbird se sont fermés brusquement. Je voudrais savoir comment les réouvrir. Merci de votre aide.

I belong to a group which need to receive a report to the whole group on a regular basis. How do I do this? The Mozilla instructions don't seem to apply to Firebird and have instructions which don't work on Firefox version 115.18.0

Thunderbird ver 115.18.0, on a Win7 machine, upgrading not an option

When opening Thunderbird I get a sign-in message, inserting my email address and clicking the next button I get the google error message.

When I send photos from my phone to my imac inbox, same email address, or when a third party sends me a verification code, "get messages" is very slow showing results. Sometimes minutes, so I have to go through several verification attempts. The primary email account is gmail. My ISP is comcast.net. I don't know if this matters, because slow Get Messages is recent. It used to work very well

I have a contact list of about 90 addresses for a mailout. I want to copy the list to another computer. How can I do this? I've only managed to find how to copy the entire address book.

I'm using Thunderbird 115.18.0 and just today it's behaving bizarrely. Crashed twice for no reason, and emails are taking "forever" to delete -- normally they delete immediately (unless they have an enormous attachment), but today I have to wait about 4 seconds for one short text only email to delete. Compacted folders, and made no difference.

Any ideas? Anything I can do to return to my normal I love Thunderbird condition?

Thanks.

This just started today. I am seeing question marks between the sentences in my messages. I had this issue a number of years ago and do not remember the fix. I am running the latest version on my Windows 7 desktop. It is just the new messages not the older ones in file.

Anyone remember the fix?

Thanks

Al