We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Buscar en Ayuda

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Este tema ha sido archivado. Haz una nueva pregunta si necesitas ayuda.

Thunderbird suddenly won't send email.

filmlabrat
filmlabrat
more options

I compose a message in TB then try to send. It hangs up on the "Sending" message bar and never completes. It worked yesterday. Windows 10 update last night now it does not work. Coincidence?

I compose a message in TB then try to send. It hangs up on the "Sending" message bar and never completes. It worked yesterday. Windows 10 update last night now it does not work. Coincidence?

Todas las respuestas (1)

user22607958715535546035048419059964294417
user22607958715535546035048419059964294417
more options

Hello,

Please follow the steps as provided in this Knowledge Base article https://support.mozilla.org/en-US/kb/cannot-send-messages and let us know if this solved your problem.