Thunderbird Community Forum

I am using MacOS 10.13, Thunderbird 115.15.16ESR: my Hotmail worked until 15 May 2025 and then it would not download new emails. Screenshots are available if you want me to post them. I got an error message: "authentication failure while connecting to server outlook.office365.com". I updated Thunderbird to the latest for my OS: 115.18.0ESR. Still no new emails. I deleted my email account on Thunderbird and tried to reinstate it. Now I get an error message when trying to set up the account: "Unable to log in at server. Probably wrong configuration, username or password." I tested my password by logging into my Microsoft account with it on my browser. I can also login to my email using Firefox, but I want my Thunderbird email client to work again.

The configuration I am using is: I use my normal hotmail password in the password field. I also set up a new App Password with Microsoft and tried that without success. With the 115.18 update there is a new field: Your login. I just put my hotmail email address in here. incoming: outlook.office365.com, port 993, SSL/TLS, Oauth2 
outgoing: smtp.office365.com, port 587, STARTTLS, Oauth2 (I have also tried: smtp-mail.outlook.com)

I enabled 2-step authentication with Microsoft in my Microsoft account more than a year ago. Interestingly, I don't get a prompt on my iPhone Microsoft Authentication App when I select Done when trying to set up the hotmail account on Thunderbird.

Please help. I am desperate, and I have wasted a lot of time on this without success. Cheers

I need assistance to setup my accounts correctly in my unified inbox. A few times I have lost some messages, when sending mail, they go out from both accounts Is there a way to chat with someone, and to share screenshots. I look forward to hear.

Hi, Win 10 Pro new installation. Dell Optiplex MBR type Bios.

I had saved a recent profile to an external drive in its own name (i.e. not the profiles folder)

After the new Win 10 installation, I downloaded a new copy of Thunderbird.

I then copied the saved profile into the new Profiles folder, selected it in Choose user profile and started Thunderbird.

Thunderbird opened but not with the saved (8+ Gb) profile, just one new email account and asking for passwords to other email accounts I used before, and no folders.

I went back into the profiles folder and renamed all other profiles "OLDxxx999, but still the same one new email account when I opened Thunderbird.

I desperately need the saved email folders - I don't mind loading all the email accounts again, just need my court case history folders.

How can I force Thunderbird to use the saved profile, or can I identify and individually load in the saved local folders?

Thank you for any guidance towards a solution.

Hi. My new Gmail account cannot be added to Thunderbird.

It is working on the WEB, but I cannot find the area to manually configue the email settings.

Is there anyway I can have someone log onto my computer to set it up.

I am willing to pay for this service.

Thanks

John Brozowski [edited from public] (work) [edited from public] (cell)

TB New V140 has an issue: when adding a new email account the wizard stays in a loop, no information why and no option any more to add the account data manually. No idea why it's necessary to keep users out from a manual setup and let them use a not working apple style wizard....

Two days ago I paid to renew my Thunderbird license, but I still am getting a message that I need to renew my license. Also, when I try to write an outgoing email, Thunderbird freezes up, and I have to shut it down before I can use it again. I also lose whatever message I was writing.

years ago my Verizon.net email account was taken over by AOL. I can access that acct from the AOL web site. I would prefer adding it to my current Thunderbird account. I have tried various configurations, but none succeed. Suggestions appreciated.

bonjour , mon compte a été banni sur geckzone, impossible de réinitialiser le mot de passe

My account has been banned on Geckzone, I can't reset my password.

While solving some other problem, I created a new account in Thunderbird. After that I deleted that account, and now the inbox for my old account is empty. All other folders are intact. How do I restore my inbox?

My user profile folder is 36GB (23GB compressed zip) consisting of 8 email accounts. My thunderbird version is 140.0esr (64-bit). It has been flawless and I back up the profile every week. All email accounts are setup as imap and original copies are in the cloud.

Setting aside bandwidth and storage limits, I am wondering whether there is an upper limit to the size of the profile folder?

Even if there is no upper limit, is there a better way to manage such a huge profile folder?

Several years ago, I switched over to the beta path of Thunderbird... In doing so, I created a new profile for the beta installation, leaving the old one behind in case I wanted to abandon beta... So I had two profile folders; I *thought* they were this:

current profile: c:\notes\Thunderbird original backup profile: c:\notes\Thunderbird.b115

Now, I've decided that there is no reason to retain the old Thunderbird profile folder, since I'm clearly committed to the beta path... however, I have discovered an anomaly... *both* the old and new profiles are periodically being updated!! Thunderbird.b115 is apparently actually my active profile, but Thunderbird was updated just a few days ago.

When I look at About Profiles, I actually see *three* profile folders listed:

Profile: Gorlash: (default: no) c:\notes\Thunderbird

Profile: Derell Licht beta: (default: no) c:\notes\Thunderbird

Profile: Thunderbird beta (default: no) c:\notes\Thunderbird.beta (note that this folder does not exist)

Profile: Thunderbird b115: (default: yes) c:\notes\Thunderbird.b115

===========================================

Is there something that I could do to consolidate all of this into just one folder? I don't even *know* what those Gorlash and Derell Licht profiles refer to... Yes, those are both usernames that I use online, in various contexts, but as far as I know, I don't use them in Thunderbird...

Q1: Can I just delete those other profiles where default is NO ?? Q2: Why is c:\notes\Thunderbird still getting periodic updates, even though those profiles are not default??

Hello, all,

My income has changed and I need to cancel my recurring donation. I used <redacted>@shaw.ca for my donation. My name is Dorothea Hoffman and I pay 1.75 Cdn monthly.

I'm a senior citizen and not very good with computers. Not sure what programs I have other than Windows and Thunderbird for my email. Love the program .. not a minutes problem with it. Received a notice this am about the changes, not sure if that pertains to me. Please enlighten me.

Under Thunderbird account settings, I have 3 email accounts. Also I have checked Outgoing server SMTP settings, I have 3 accounts there. But there is a hidden account because Thunderbird keeps asking me for credential of my previous work email account. Is that hiding inside Thunderbird Calendar or Chat ??? Where is it hiding???

I have both paid and free Protonmail accounts. Can I import all into TBird? Three devices, Win 10 on laptop, Arch Linux on another laptop and Android 16 running GrapheneOS. Thanks

Hi everyone,

I could really use some help with Mozilla Thunderbird.

I had my official email set up in Thunderbird using a POP3 connection. Before I updated Windows and reinstalled Thunderbird, I backed everything up — all the emails and settings.

Now, after reinstalling Thunderbird, I’m trying to get my old emails and account settings back, but I just can’t seem to make it work. I tried copying my old profile folder over the new one, but nothing shows up properly.

I’m not sure if I’m doing something wrong or missing a step. Can someone please walk me through how to properly restore a POP3 email backup in Thunderbird? I really need to get my old emails back.

Thanks a lot in advance!

I copied my profile from old computer, put TB on new computer, copied the profile to overwrite the profile on new computer- all seemed fine but no names, no email copies, no data. I followed the instructions, no what?