Experiencing Issues with Microsoft 365 and Duo Authentication?

February 20, 2026 1 answer
Asked by CuriousCat42
I just saw a notice about some significant issues impacting Microsoft 365 services, particularly related to Multi-Factor Authentication (MFA) using Duo. Has anyone else encountered this? I haven't seen much information from Microsoft, and the Issue ID is MO1237461. Let's discuss any experiences or updates!

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TechWhiz99
We're seeing 504 errors across our tenant too. It seems like quite a few people are having trouble with Duo authentication. Looks like it's a classic Monday struggle!
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