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11 Nov. I am unable to send or receive e-mail using Thunderbird. I have a gmail e-mail address. When I want to open Thunderbird, I am required to log in using Google. This has just been the case for a few days. Previously, I never had to do this.

It does not work. I cannot log in using Google. I get "Error message 400".

My account settings are: outgoing server smtp.gmail.com incoming server: imap.gmail.com Port: 993 connectivity security: SSL/TLS Authentication: 0Auth. Is there something incorrect in the Account settings?

Sometimes I get a message saying "Authentication failure while connecting to server".

I saw something on line about Troubleshoot Mode for Thunderbird, but I can't get there.

I desperately need to solve this problem. I have used Thunderbird for many years, and have a lot of data in Local folders. I do not want to lose all this data. Thank you.

I suddenly this week cannot send email using Thunderbird (v. 140.4.0esr (64-bit)). I receive email fine. I can send email using webmail with my provider. Error message in Thunderbird is: "Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: resomta-h2p-555359.sys.comcast.net resomta-h2p-555359.sys.comcast.net ESMTP server not available (62240/216.183.125.238)." My provider says the issue is not at their end because my server settings are correct. Outgoing SMTP port is 465, connection security SSL/TLS. Operating Windows 11 v. 24H2.

Yesterday, my ameritech.net email stopped working in Thunderbird. I get an error saying it's unable to log into the server. The email account works from outlook, and from a web browser, so I know I'm using the right password. I've tried it on more than one computer and it's only Thunderbird that is having the problem. It's working with my gmail account. Any help would be appreciated.

Every time I open thunderbird I get a blank screen with this message, 'Edge: Too many requests' over the top of the thunderbird screen. This screen stays on my desktop after I close Thunderbird and I have to change my screen resolution in order to close the screen. Can you help please? Martyn Smith

I have been using Thunderbird to download my mail from Yahoo for a long time without incident. Now I keep getting the message "Edge: Too Many Requests" as a response when trying to download my email messages (see attached file). I waited 24 hours and then tried again but still get the same message. I am able to log on to Yahoo on my desktop and see my mail without a problem. Is there something that needs to be cleared or reset in Thunderbird? My other email accounts in Thunderbird work fine. Any ideas would be helpful.

hello Suddenly 2 days ago, when opening Thunderbird, I have a message saying : the connection from the server imap failed with the user name name@neuf.fr I tried twice to re-install Thunderbird and I also tried twice to change my password : neither was successfull But when I go to internet on the sfr mail site, the connection is successful... I'm lost... Thanks for your help if possible Christine

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.

Have used Thunderbird for years and 2 years ago, my Cox service eliminated supporting their own emails server and now Yahoo supports. I am having a problem over the past 2 weeks where I click on my Thunderbird app to load the program and get emails, and it times out after about a minute every time I try to log in. I have deleted the Thunderbird account and tried to add a new account, and it continues to time out every time.

What am I doing wrong?

I just downloaded Thunderbird and trying to setup my existing email. It keeps giving me the message "Unable to log into server. Probably wrong configuration, username or password. I just logged into my email on yahoo and the user name and password worked fine.

Here is a message I receive when I try to send email from my Hotmail account in Thunderbird.

Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: Cannot connect to SMTP server 52.96.165.242 (52.96.165.242:587), connect error 10060.

When attempting to access my emails on Mozilla Thunderbird i am met with a text box prompting me for my password, when I enter the password it informs me that is it unable to connect to the server. following guides online for similair issues it encourages you to change your authentication to "Oauth2" however this option does not appear for me and all relevant responses on here are in regards to microsoft accounts whilst my account is from a custom domain. Any help would be appreciated as it is a great inconvenience to not have access to my email.

Bonjour j 'ai installe Thunderbird sur mon ordi et avec les parametres adequats celui-ci me met ce meaasage d 'erreur: "Connexion au serveur impossible.la configuration ,l identifiant oe le mot de passe sont probablement incorrects. .Mon adresse mail ; alain.hautreux@orange.fr... Après verication tout est correct,je ne comprends pas. Merci pour votre aide Cordialement Alain Hautreux

A search showed that others have experienced this same error message, but as far as I can tell, they all were unable to access their email. These messages began appearing about a month ago. They pop up in Troubleshooting Mode. They did not in Windows Safe Mode. AVG and ZoneAlarm are not the culprits.