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Microsoft 365 applications access outage

Service Disruption
First reported
Last updated
Happening score
H score 0
1 unique sources, 1 articles

Summary

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Microsoft is investigating an ongoing Microsoft 365 outage that is blocking some customers from reaching Microsoft 365 applications. The disruption was first acknowledged at 05:06 AM UTC on Monday and matters because it is interrupting access for affected users while Microsoft works to restore service.

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Microsoft Exchange Online mail flow disruption

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H score25 First: 02.06.2026 20:02 Last: 02.06.2026 20:02 Sources 1

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Microsoft Teams and Office for the web file-opening outage

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About this happening: Microsoft is investigating an ongoing service disruption that is blocking Teams and Office for the web users from opening files, disrupting access to shared documents...

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Microsoft My Sign-Ins MFA outage

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H score25 First: 01.06.2026 14:40 Last: 01.06.2026 14:40 Sources 1

About this happening: Microsoft is dealing with an ongoing outage that is blocking some users from setting up multi-factor authentication (MFA) and accessing My Sign-Ins. Affected users...

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Microsoft Windows 365 Office installation disruption

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H score0 First: 13.05.2026 14:53 Last: 13.05.2026 14:53 Sources 1

About this happening: The Windows 365 service update has introduced a configuration change that is blocking Office downloads and installs for some customers, disrupting access on cloud PCs....

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Timeline

  1. 13.10.2025 12:00 2 articles · 9mo ago

    Microsoft reviews telemetry and recent service changes

    Technical Analysis Update

    At 09:00 UTC, Microsoft says it is continuing to analyze service telemetry alongside recent changes made to the service to identify the root cause and define a path to resolution.

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  2. 13.10.2025 08:06 1 articles · 9mo ago

    Microsoft 365 access disruption affecting some users

    Victim Impact Update

    Some users served through the affected infrastructure cannot access Microsoft 365 applications on Monday morning, and Microsoft has tagged the issue as an incident in the admin center because it is causing noticeable user impact.

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