| EX1056704 | Exchange Online | Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the Exchange admin center (EAC) |
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| Status | serviceDegradation |
|---|---|
| Classification | advisory |
| User Impact | Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the EAC. |
| Last Updated | 04/25/2025 14:31:01 |
| Start Time | 04/14/2025 00:00:00 |
| End Time | |
| Latest Message | Title: Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the Exchange admin center (EAC)
User impact: Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the EAC. More info: Some users intermittently may be unable to start Outlook (classic) when in working online mode and encounter the following error: “HTTP 503 Service Unavailable.” Additionally, when attempting to complete operations in the Exchange admin center (EAC), admins are returned a “503 Service Unavailable” error. Current status: Our analysis of call stack logs related to the workload management module and suitability verifier in the directory layer is ongoing. We’re analyzing these stack logs to identify a potential correlation in the data, to aid in identifying the root cause and help developing a mitigation plan. We’re continuing to investigate connectivity issues and high latency in provisioning handler calls, and its impact on service performance. Scope of impact: Any user who attempts to start Outlook (classic) when working in online mode or utilize the EAC may be impacted by this event. Start time: Monday, April 14, 2025, at 12:00 AM UTC Next update by: Friday, April 25, 2025, at 8:00 PM UTC |