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Hotmail oAuth2Error "Authentication failure: unknown user name or bad password"

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  • Last reply by Wayne Mery

Konstantin Svist
Konstantin Svist

My Hotmail account suddenly stopped working today (was working yesterday). Thunderbird shows a popup saying authentication failed, but doesn't ask me to try a different password (not that I changed it recently).

The error details are only visible in Error Console:

Got an error name=oAuth2Error, the server said: Authentication failure: unknown user name or bad password.

Using server: outlook.office365.com, port 995 (POP) user name: ****@hotmail.com SSL/TLS, OAuth2

My Hotmail account suddenly stopped working today (was working yesterday). Thunderbird shows a popup saying authentication failed, but doesn't ask me to try a different password (not that I changed it recently). The error details are only visible in Error Console: Got an error name=oAuth2Error, the server said: Authentication failure: unknown user name or bad password. Using server: outlook.office365.com, port 995 (POP) user name: ****@hotmail.com SSL/TLS, OAuth2

All Replies (1)

Wayne Mery
Wayne Mery
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If you are still having trouble, take note, later in the day we see a service outage https://downdetector.com/status/outlook/

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