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Thunderbird can not connected to hotmail

carrieli.rmb
carrieli.rmb
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I’m using Thunderbird to connect my Hotmail account. The setup shows as “successfully added,” but an error message appears:

“The operation on Inbox did not succeed. The mail server for account responded: User is authenticated but not connected.”

Previously, the connection worked perfectly, but starting this week, Thunderbird can no longer access or sync the hotmail mailbox.

How to fix this problem!!???

I’m using Thunderbird to connect my Hotmail account. The setup shows as “successfully added,” but an error message appears: “The operation on Inbox did not succeed. The mail server for account responded: User is authenticated but not connected.” Previously, the connection worked perfectly, but starting this week, Thunderbird can no longer access or sync the hotmail mailbox. How to fix this problem!!???
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carrieli.rmb
carrieli.rmb Question owner
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I have already checked all the settings, including:

Server type (IMAP)

Server name: outlook.office365.com

Port: 993

Connection security: SSL/TLS

Authentication method: OAuth2

Everything is configured correctly, and it used to work fine until this week. The issue suddenly appeared without any changes on my end.

Could you please advise how to fix this connection problem or whether there have been any recent changes to Microsoft or Thunderbird’s authentication system?

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