Service Notes – Information Technology Services

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Date	Description
02/24/2026	Update 10:45 AM - 2/23/26: Users appear to be able to log in to M365 Online services again. Microsoft is reviewing sign-in logs and related network telemetry following reports of 504 gateway timeout errors affecting sign-in using Multi-Factor Authentication (MFA), through Microsoft's Platform Authenticator and third-party MFA such as DUO. Truman IT Staff will also continue to monitor the situation. Original Notice 8:30 AM - 2/23/26: Microsoft recently completed a service operation that was intended to upgrade their API flow and unfortunately, it impacted Microsoft 365 logins. Microsoft advises that they are in the process of deploying a fix for this issue. Truman IT staff is working on a manual process that may help to resolve the issue sooner than Microsoft's broad fix rollout.

Date

Description

02/24/2026

Update 10:45 AM - 2/23/26:

Users appear to be able to log in to M365 Online services again. Microsoft is reviewing sign-in logs and related network telemetry following reports of 504 gateway timeout errors affecting sign-in using Multi-Factor Authentication (MFA), through Microsoft's Platform Authenticator and third-party MFA such as DUO. Truman IT Staff will also continue to monitor the situation.

Original Notice 8:30 AM - 2/23/26:
Microsoft recently completed a service operation that was intended to upgrade their API flow and unfortunately, it impacted Microsoft 365 logins.

Microsoft advises that they are in the process of deploying a fix for this issue. Truman IT staff is working on a manual process that may help to resolve the issue sooner than Microsoft's broad fix rollout.

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