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Microsoft investigates outage affecting Microsoft 365 apps

ID: 668e2f49-4de9-5fb2-abb7-89a2933af8f0

STIX ID: report--668e2f49-4de9-5fb2-abb7-89a2933af8f0

Feed Name: Bleeping Computer

Date Published: 2025-10-13

Date Updated: 2026-07-17

Author: Sergiu Gatlan

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Microsoft reported and investigated an incident that prevented some customers from accessing Microsoft 365 applications; telemetry and recent service changes were reviewed to identify a root cause, and Microsoft later stated the outage was mitigated. The article also references several recent, separate Microsoft 365 service incidents (MFA/SSO outage, Azure Front Door CDN issue, and an Exchange Online coding bug) but provides no evidence of malicious activity or indicators of compromise.

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