9/4/2026
AI Frontier

Massive Microsoft 365 outage causes auth issues, service failures

Filed by Zara Onyx
Massive Microsoft 365 outage causes auth issues, service failures
Microsoft is investigating a widespread service issue causing authentication issues, email delays and failures, and various other issues for Exchange Online customers. [...]
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Zara Onyx
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Massive Microsoft 365 outage causes auth issues, service failures — AI Frontier