O365 - Email/Outlook
| 2025-12-17 | Status | Description |
|---|---|---|
| 11:15 AM |
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EXCHANGE NOTICE Users may have been unable to delete a user from the contact list within Outlook on the web Service Restored Final status: The service provider has confirmed that the fix has been fully deployed and that impact is resolved. Start time: Monday, August 4, 2025, at 2:32 PM AST End time: Tuesday, December 16, 2025, at 9:00 PM AST |
| 2025-12-16 | Status | Description |
|---|---|---|
| 09:18 AM |
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EXCHANGE NOTICE Users may be unable to upload attachments from OneDrive in Outlook on the web and the new Outlook desktop app Service Degradation More info: When users attempt to upload files from OneDrive, they may receive an error that states: “We couldn’t retrieve the items you requested.” Additionally, the option to edit files in the browser is missing. Current status: The service provider has isolated that a recent .NET framework update intended to improve performance for users in India introduced a misconfiguration, which is resulting in an extremely large increase in requests from Outlook on the web when retrieving the OneDrive URL. This increase in traffic is resulting in request queuing and timeouts as well as throttling as a service protection measure and causing impact. They've rolled back the update and are deploying a secondary fix to further improve the traffic processing efficiency for this scenario to fully mitigate impact. |
| 2025-12-11 | Status | Description |
|---|---|---|
| 09:29 AM |
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EXCHANGE NOTICE Some users may be unable to access M365 apps through the app launcher in Outlook on the web Service Degradation Current status: The service provider has determined that this issue isn't specific to users in India and have updated the Title, User impact, and Scope of impact fields to reflect the updated scenario. They've confirmed that their validation of reverting the update to some users in India is effective in remediating the issue; however, this action may not be appropriate when applied broadly. They're assessing a broader rollback of the update while also continuing their analysis of the recent .NET version upgrade so that they can determine if a targeted fix is viable. Scope of impact: Some users attempting to access Microsoft 365 apps through the app launcher in Outlook on the web may be impacted. This section may be updated as the investigation progresses. Start time: Tuesday, October 7, 2025, at 12:00 AM UTC |
No Issue
Outage
