Zhenguo Zhang's Blog
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[Thunderbird] Error: User is authenticated but not connected

Issue

In last few days, my thunderbird striked: it frequently popped two error messages: “The service outlook.office365.com is disconnected” and “User is authenticated but not connected”.

Research

After searching the website for a few days, I came to an solution, which was found here.

Solution

Go to Settings -> Config Editor, and then search network.dns.disableIPv6 and click the toggle switch on the right to make it ‘true’. Finally close and reopen Thurderbird, and the problem should be resolved.

Happy New Year! 😄


Last modified on 2023-01-02

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