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

Search Support

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 fío arquivouse. Faga unha nova pregunta se precisa axuda.

Login to server failed. I have two POP accounts that used to work fine. I cannot enter proper password and send. Upgrade switched problems to other account.

  • 1 resposta
  • 3 have this problem
  • 2 views
  • Last reply by christ1

Rastus1
Rastus1
more options

I have a message "Login to server XXXXX failed" and I cannot send the message. I have two POP accounts that both used to work fine for years. It started with failing to accept password for one of them. There were no add ons or changes to viral/firewall system. Apparently, it began after an update to Thunderbird (also, I'm on Windows 8.1 6.3.9600 ).

At times it would allow me to input the password after several tries for the account that would not send. Mostly not though. I would have to change the outgoing mail address to get my messages out.

Now the damn thing has switched the accounts that fail and work. The one that was working fine now fails and the one that was failing now works.

What up?

I have a message "Login to server XXXXX failed" and I cannot send the message. I have two POP accounts that both used to work fine for years. It started with failing to accept password for one of them. There were no add ons or changes to viral/firewall system. Apparently, it began after an update to Thunderbird (also, I'm on Windows 8.1 6.3.9600 ). At times it would allow me to input the password after several tries for the account that would not send. Mostly not though. I would have to change the outgoing mail address to get my messages out. Now the damn thing has switched the accounts that fail and work. The one that was working fine now fails and the one that was failing now works. What up?

All Replies (1)

christ1
christ1
  • Top 25 Contributor
more options

https://support.mozilla.org/kb/cannot-send-messages