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
March 13, 2024 - Started over 1 year ago
- Lasted about 7 hours
Incident Report
Users may be unable to send, or see delays up to two hours when sending, email messages through Exchange Online.
Components affected
Exchange OnlineNeed to monitor Microsoft 365 outages?
One place to monitor all your cloud vendors. Get instant alerts when an outage is detected.
Latest Updates ( sorted recent to last )
over 1 year ago - at 03/13/2024 07:14PM
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
over 1 year ago - at 03/13/2024 07:12PM
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
over 1 year ago - at 03/13/2024 04:30PM
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
over 1 year ago - at 03/13/2024 02:33PM
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
Latest Microsoft 365 outages
The Status Page Aggregator Built for IT Teams
With IsDown, you can monitor all your critical services' official status pages from one centralized dashboard and receive instant alerts the moment an outage is detected. Say goodbye to constantly checking multiple sites for updates and stay ahead of outages with IsDown.
Start free trialNo credit card required · Cancel anytime · 4522 services available
Integrations with
