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Hello, I'm new to Thunderbird, trying to connect my accounts for the first time. I've tried linking my new Posteo email, and I'm getting the same error message that it looks like many people are getting for various accounts (especially gmail) -- "Unable to log in at server. Probably wrong configuration, username or password." It's the correct username (email address) and password, and I'm selecting IMAP, which is the recommended configuration in Posteo's own instructions for linking with Thunderbird. I can't find any trouble shooting info that's not for gmail. (I haven't tried to link my gmail yet).

I would appreciate any help with this matter. I was excited to use Thunderbird, and now I'm wondering if I need to find a different option.

Bonjour à tous et toutes, Je ne dois pas être le seul à demander ou redemander, cette question auquelle je ne trouve pas une seule solution éventuellement proposée, qui règle le souci Explication J'ai donc thunderbird avec 5 comptes de mails d'opérateurs différents dont, l'emmerdeur FREE En effet, en plus du logiciel, j'ai un vpn sur mon pc et mon mobile pour le travail et autres Si par malheur j'interroge mon mail free avec mon vpn actif soit sur pc ou sur le mobile, tout se passe correctement mais trés rapidement dans la nuit cet emmerdeur de free bloque mon mail, annule le mot de passe car il a détecté le MAL !!! et bloque toutAlors les ennuis commencent avec thunderbird Je m'arrache les cheveux, car à peine déclencher evidemment il interroge free et là !! bim !!! refusé ! et c'est le caca !! la fenêtre de connexion pour free, n'arrête pas de revenir bloquant tout, tout !! tant qu'il n'aura pas un bon m d passe ! et je ne veux pas supprimer le compte mail pour débloquer, car cela fou la merde avec tous mes dossiers de mails free enregistrés dans thunderbird , et c'est pénible de tout remettre et relancer et reconfigurer comme on le souhaite Je voudrais savoir pour les ingénieurs et leurs grandes antennes de thunderbird, ne font rien pour ce souci a priori réccurent et connu On m'a dit de décocher des cases pour essayer de "sauter" free mais aucune solution ne fonctionne C'est une vraie plaie à l'appréciation de ce logiciel. Alors svp une vraie réponse de pro claire façon tuto et fonctionnelle svp pitié !!

(Login to server imap.videotron.ca with username (username....)failed) shows up continually and I don't know how to make it stop. It is stopping me from sending or opening emails. Can someone please give me a solution. I've just switched it to a new computer and I am getting the same messages on both computers. Thanks

I have Thunderbird 142-esr on a Windows 11 computer with two users in separate Windows users account. The second user (my wife) suddenly had her gmail login stop working on TB, even though it continued working on all other devices. The symptom was that the inbox would hang trying to log on to gmail, although no error messages appeared.

My account worked normally throughout this time.

After trying less destructive fixes such as closing the application, logging off, and restarting Windows, I guessed there was an issue with her account, possibly a corrupted file. So I deleted her gmail account. When I tried to create a new account, TB accepted her credentials and the Google login came up. I successfully authenticated to Google, but installation failed when I returned to the TB new account screen. After a long wait, TB issued an error message saying the password or user name was bad.

I did two tests to isolate the problem. First, I attempted to install my wife's gmail account in my Windows TB instance. That failed in the same way. Second, I attempted to install my gmail account on her Windows instance. That worked. I concluded there was nothing wrong with her instance of TB. I thought it might be an issue with her password, although Google has never asked her to change it, and there haven't been issues logging on outside of TB. Her password did not meet Google's current requirements, so I changed it to 12 characters, mixture of upper/lower case, numerals, and special characters. That worked.

Unfortunately, during the process, I lost her settings, and it took a while to recover them from backup media.

I'm posting this more to ask if others have experienced such a problem than as a request for help, as I think the underlying issue is now resolved. Because it may be some kind of malignant interaction between TB and gmail, I thought it might be worth reporting as well.

Hey all, here's my conundrum:I have tbird on my phone, 12 different email addys all told. Imagine if you can my dismay at finding no passwords transferred using that quick transfer thing. Please tell me there is a way to fix this without having to manually re-enter every dang pass... Thanks

I stopped using Thunderbird in 2024 because of inability to change pw. I have same email accounts at comcast but would like to go back to Thunderbird. Currently using Comcast directly but loved TBird. I have a pw in use at comcast , how do I get Tbird to accept it for both email accounts on iphone and ios laptop?