Outage in Microsoft 365
Some users may be unable to access their mailbox in Exchange Online via any connection method
Resolved Minor
February 11, 2026 - Started 1 day ago
- Lasted about 2 hours
Incident Report
Title: Potential issues accessing mailboxes via one or more connection methods
User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods.
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 60 minutes.
Components affected
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Latest Updates ( sorted recent to last )
1 day ago - at 02/11/2026 09:29AM
Title: Some users may be unable to access their mailbox in Exchange Online via any connection method
User impact: Users may be unable to access their mailbox in Exchange Online via any connection method.
Current status: We're reviewing service monitoring telemetry to isolate the source of the issue and establish a fix.
Scope of impact: Impact is specific to some users in Europe attempting to access their mailbox in Exchange Online via any connection method.
Next update by: Wednesday, February 11, 2026, at 11:30 AM UTC
1 day ago - at 02/11/2026 09:08AM
Title: Potential issues accessing mailboxes via one or more connection methods
User impact: Users may experience errors or failures when accessing their mailbox via one or more Exchange Online connection methods.
Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 60 minutes.
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