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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.

Hello,

I'm trying to add my secondary email account to thunderbird but I couldn't make it work. I've been using thunderbird for at least 15 years and this is first time I'm seeing anything like that. I think Account Hub is a new feature, I had to reinstall my PC and fresh Thunderbird installation came with it.

The account hub asks for my name and email address. I enter both and as soon as I click continue it says my username or password is incorrect. I don't get any prompt for password. It hangs and gets stuck here.

As an alternative I tried entering a made up email address (something like asd@ba.da) and then it gets into manual settings. I thought I could get it sorted that way but I was wrong. After I fill the form and click continue I get the blank error message. if I click advanced setup it gives me an error about cleanup property. I also get an error message sayign incoming server already exists, that's probably because I have another email account on the same server, but I'm not sure why this is an issue now. Can't I have multiple email accounts on the same mail server?

Probably this has something to with my mail server's autoconfig setup. However I believe user should be able to manually enter account config, incoming/outgoing server etc. At the moment I'm totally blocked and I can't add my second email account to thunderbird.

Thanks

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 don't know how to safely do this but I have been hacked and can not use any of the accounts you have saved. I have a new Chase card and would like to Update my payment to continue getting Netflix. Perhaps you could send a phone number I could call to do this. Gail M Kader

Local folders were in default location on C: drive, 128GB SSD boot drive. Installed a 1TB SSD as D: drive. Want to use D: for local folders. When changed local drive to D: lost access to default Local Drive. Can't reconnect as location not visible in file explorer. Want to move local folder from C: to D:.