Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Kuaave
Ñongatupyre

0Auth sign in not supported

brad331

OAuth signing not supported. Cannot sign in with Thunderbird. Authorization failed. Help please.

OAuth signing not supported. Cannot sign in with Thunderbird. Authorization failed. Help please.

Opaite Mbohovái (2)

Hi Brad

Is this the first time you've setup the account in Thunderbird Android?

Who is your email provider? Have you checked if oAuth authentication is supported by your provider? Have you tried traditional user name and password authentication?

The more detail you can share, the greater chance we have to resolve this for you!

Brad, please don't abandon your reports. Thanks.