O365 - Email/Outlook
| 2025-10-17 | Status | Description |
|---|---|---|
| 01:56 PM |
|
Service Health Incident EX1173828, Status Service Degradation Details Title: Users may be unexpectedly signed out from Outlook on the web when accessing shared mailboxes User impact: Users may be unexpectedly signed out from Outlook on the web when accessing shared mailboxes. Current status: We’re continuing our assessment of the errors observed when users attempt to access shared mailboxes in Outlook on the web, as we work to isolate the cause of this issue and determine an appropriate remediation action. Scope of impact: This issue can potentially affect any user when accessing shared mailboxes from Outlook on the web. Next update by: Friday, October 17, 2025, at 10:30 PM UTC |
| 09:11 AM |
|
Service Health Incident EX1173600, Status Service Degradation Details Title: Some users have the new Outlook client open in their web browser instead of the Desktop client User impact: Users have the new Outlook client open in their web browser instead of the Desktop client. More info: As a workaround, users are able to use the classic Outlook to access their Exchange Online mailbox. Current status: We've identified that a code bug contained in a recent service update is causing a race condition and resulting in the impact. We've developed a fix to address the code issue which we're preparing to deploy to the affected environment. We'll aim to provide a timeline for the fix to deploy by our next scheduled communications update. Scope of impact: Your organization is affected by this event, and some users attempting to open the new Outlook client are impacted. Root cause: A code issue contained in a recent service update is causing a race condition and resulting in the impact. Next update by: Monday, October 20, 2025, at 9:00 PM UTC |
No Issue
Outage
Notice
