| EX1441488 | Exchange Online | Some users may see unwanted add-ins appearing automatically across all Outlook clients |
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| Status | serviceDegradation |
|---|---|
| Classification | advisory |
| User Impact | Users may see unwanted add-ins appearing automatically across all Outlook clients. |
| Last Updated | 09/21/2026 17:05:50 |
| Start Time | 07/17/2026 10:26:00 |
| End Time | |
| Latest Message | Title: Some users may see unwanted add-ins appearing automatically across all Outlook clients
User impact: Users may see unwanted add-ins appearing automatically across all Outlook clients. More info: These add-ins are configured to be available to users by admins but aren’t expected to be automatically installed. To bypass this issue, admins can run the “Set-App -Identity -OrganizationApp -PrivateCatalog -DefaultStateForUser Disabled” command to remove add-ins that are unintentionally appearing. Current status: As our deployment of the fix is nearing completion, we’re performing final validations in our internal testing environment to confirm its efficacy before enabling for all affected users. Scope of impact: Impact may occur for some users that are viewing their add-ins across all Outlook clients. This section may be updated as the investigation progresses. Start time: Friday, July 17, 2026, at 10:26 AM UTC Root cause: A portion of the Exchange Online add-in sync pipeline isn’t processing add-in state information as expected. This is causing incorrect EnabledStatus values being returned and Outlook automatically displaying add-ins configured as Available, which is resulting in impact. Next update by: Tuesday, September 22, 2026, at 6:30 PM UTC |