Some users may experience issues when accessing their Exchange Online mailbox via one or more connection method
ID: EX1253275
Issue type: Incident
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Status
Service Degradation
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Impacted services
Exchange Online
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Details
Title: Some users may experience issues when accessing their Exchange Online mailbox via one or more connection method
User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods.
More info: Users may experience errors or failures when attempting to accessing their mailbox.
Impacted connection methods include but may not be limited to:
- Outlook on the web
Current status: We’ve identified a backend issue that’s preventing some services from responding as expected, resulting in mailbox access delays. We’re investigating this behavior across regions to better understand the impact and determine next steps. We’re seeing signs of service recovery and will share additional updates as our investigation continues.
Scope of impact: Impact is specific to some users attempting to access their mailbox via any of the connection methods detailed above.
Next update by: Monday, March 16, 2026, at 3:30 PM UTC
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