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.

How do I get Thunderbird to connect to a properly-configured Office 365 mail account after shutting down and then restarting the client?

  • 3 respostas
  • 65 have this problem
  • 12 views
  • Last reply by milchsage

TehGunky
TehGunky
more options

I get my Office 365 account set up and working in Thunderbird. I can download and send mail just fine using the auto-detect or manual account settings recommended by Microsoft/Outlook/Office 365. Everything appears to be working as it should as long as the client stays open. When I shut the Thunderbird client down and restart it, it can no longer access the Office 365 mail account. I get a popup error message:

The current operation on 'Inbox' did not succeed. The mail server for account (my Office 365 account) responded: User is authenticated but not connected.

It has no problem connecting to Hotmail, Gmail and other email services, and I can access Office 365 through the web client, but Thunderbird refuses to connect. If I remove the account and re-add it, I can have full access to my email again, but only as long as Thunderbird stays open. If the client gets restarted, it's gone again.

How do I fix this?

I get my Office 365 account set up and working in Thunderbird. I can download and send mail just fine using the auto-detect or manual account settings recommended by Microsoft/Outlook/Office 365. Everything appears to be working as it should as long as the client stays open. When I shut the Thunderbird client down and restart it, it can no longer access the Office 365 mail account. I get a popup error message: The current operation on 'Inbox' did not succeed. The mail server for account (my Office 365 account) responded: User is authenticated but not connected. It has no problem connecting to Hotmail, Gmail and other email services, and I can access Office 365 through the web client, but Thunderbird refuses to connect. If I remove the account and re-add it, I can have full access to my email again, but only as long as Thunderbird stays open. If the client gets restarted, it's gone again. How do I fix this?

All Replies (3)

BushiProf
BushiProf
more options

I'm having the same problem, on (at least) two different computers. It's clearly a new problem--this account worked fine with Thunderbird until a day or two ago. And it's clearly a Thunderbird problem--I can still access the account just fine through Outlook. So what on earth is happening, and how do we fix it?

zacshepherd
zacshepherd
more options

I think you might be having a cached password problem. I was having it and was able to resolve by deleting my stored password in Thunderbird. I referenced http://kb.mozillazine.org/Setting_and_changing_email_passwords and also posted my question and resolution: https://support.mozilla.org/en-US/questions/1015221#answer-615054

milchsage
milchsage
more options

It's solved here: http://community.spiceworks.com/topic/372289-heldesk-not-sending-emails-through-office-365

You need to open both ports (587 and 993) for inbound AND outbound on your firewall.