GoKawiilMicrosoft Exchange Online hit by outage disrupting email and authentication
Microsoft confirmed it is investigating a major Exchange Online disruption, tracked internally as EX1464935, after a flood of user reports began around 5:30 PM UTC. Tens of thousands of users reported problems sending and receiving emails, logging into accounts, and managing mailboxes through Outlook and admin tools, according to Downdetector data.
GoKawiil's interpretation of the reporting above, not reported fact.
Exchange Online underpins business email for millions of organizations worldwide, so authentication and mail-flow failures can halt communications and productivity at scale. This marks yet another disruption in a string of Exchange Online incidents this year, raising questions about the reliability of Microsoft's cloud email infrastructure for enterprise customers.
- Microsoft is investigating an Exchange Online outage causing email delays, failures, and login errors.
- Tens of thousands of users reported issues via Downdetector before Microsoft classified it as a critical incident.
- This is the latest in a series of Exchange Online outages in 2024, following similar issues in June and April.
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Published there as: “Microsoft Exchange Online outage causes email failures, auth issues”
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