Outage in Microsoft 365
Some users may be unable to send, or see delays up to two hours when sending, email messages through Exchange Online
Resolved Minor
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Outage Details
Components affected
Exchange OnlineLatest Updates ( sorted recent to last )
Title: Some users may be unable to send, or see delays up to two hours when sending, email messages through Exchange Online
User impact: Users may be unable to send, or see delays up to two hours when sending, email messages through Exchange Online.
More info: These failures and delays could occur when sending email through any Exchange Online connection method. Users may receive a Non-Delivery Report (NDR) when a message fails to send.
Current status: While continuing to investigate the root cause and observed timeouts, we're applying database optimizations in an expedited attempt to reduce impact.
Scope of impact: Some users sending email messages through any Exchange Online connection methods may be impacted.
Next update by: Wednesday, March 13, 2024, at 9:30 PM UTC
Title: Some users may be unable to send, or see delays up to two hours when sending, email messages through Exchange Online
User impact: Users may be unable to send, or see delays up to two hours when sending, email messages through Exchange Online.
More info: These failures and delays could occur when sending email through any Exchange Online connection method. Users may receive a Non-Delivery Report (NDR) when a message fails to send.
Current status: While continuing to investigate the root cause and observed timeouts, we're applying database optimizations in an expedited attempt to reduce impact.
Scope of impact: Some users sending email messages through any Exchange Online connection methods may be impacted.
Next update by: Wednesday, March 13, 2024, at 9:30 PM UTC
Title: Some users' outbound email messages are delayed by two hours or are rejected in Exchange Online
User impact: Users sending email messages are delayed by two hours or are rejected in Exchange Online.
Current status: We're reviewing message traces to isolate the root cause and determine our next steps.
Scope of impact: Your organization is affected by this event, and some users sending email messages are impacted.
Next update by: Wednesday, March 13, 2024, at 7:00 PM UTC
Title: Users sending email messages are being delayed or rejected in Exchange Online
User impact: Users sending email messages are being delayed or rejected in Exchange Online.
Current status: We're analyzing support provided information to determine our next troubleshooting steps.
Scope of impact: Your organization is affected by this event, and users sending email messages are impacted.
Next update by: Wednesday, March 13, 2024, at 4:30 PM UTC
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