Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may have seen outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates continued as expected, but the reported status and insights might not have reflected the latest device state in the Microsoft 365 Apps admin center. Final status: We've determined that a recent standard update to improve service functionality introduced an impacting code regression, which was producing the outdated device inventory and update status information in the Microsoft 365 Apps admin center. After deploying our code fix and removing the isolated code regression, a queued collection of service requests required processing before the impact was resolved. Our internal service telemetry has verified that, following our completed request processing, the impact has been remediated. Scope of impact: This issue affected any admin attempting to view device inventory and update status information in the Microsoft 365 Apps admin center. Start time: Thursday, August 20, 2026, at 12:00 AM UTC End time: Tuesday, August 25, 2026, at 7:00 AM UTC Root cause: A standard .NET service update to improve service functionality had introduced an impacting code regression. Next steps: - We're further analyzing the offending .NET improvements to help us improve our pre-deployment testing and validation processes to prevent similar impact from occurring in the future. This is the final update for the event.

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: Our code fix is fully deployed and as the backlog clears admins will start to see mitigation. We're continuing to monitor the progress of the backlog clearing and anticipate having a better understanding of the time needed for it to be finished by the time of our next communication update. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Tuesday, August 25, 2026, at 9:00 PM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: As we progress with our root cause analysis and confirm the source for this event, our validations have verified that our code fix addresses the outdated device inventory and update status admins are experiencing, remediating the impact. We're releasing our solution, and we'll provide an updated timeline for its deployment once it’s available. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Monday, August 24, 2026, at 11:00 PM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: As we progress with our root cause analysis and confirm the source for this event, our validations have verified that our code fix addresses the outdated device inventory and update status admins are experiencing, remediating the impact. We're releasing our solution, and we'll provide an updated timeline for its deployment once it’s available. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Monday, August 24, 2026, at 11:00 PM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: Following our internal validation process, we're moving to validate our potential code fix in a portion of the affected environment to verify that impact is successfully remediated. We're aiming to confirm a timeline for full deployment as it becomes available. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Monday, August 24, 2026, at 5:00 PM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: We're continuing to deploy the code fix to our internal testing environment to validate if it remediates impact as expected before deploying it to the affected environment. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Monday, August 24, 2026, at 6:30 AM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: We suspect that a recent service update may be contributing to impact. We've developed a potential fix which is preparing for internal validations. Once validations are complete we'll aim to provide a resolution timeline and more details of the underlying root cause. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Monday, August 24, 2026, at 4:30 AM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: Our service health telemetry was able to verify when admins began to see outdated device inventory and update status information. We're analyzing a subset of service update deployments that correlate with this start time of impact to help us determine our next steps in remediating the impact. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Monday, August 24, 2026, at 1:00 AM UTC

Title: Some admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center User impact: Admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. More info: Device updates are continuing as expected, but the reported status and insights may not reflect the latest device state. Current status: We’ve been alerted through our internal monitors and a subset of affected users to an issue in which admins may see outdated device inventory and update status information in the Microsoft 365 Apps admin center. We’re reviewing service health telemetry specific to when impact first occurred so that we can refine our understanding of how impact arose, which we anticipate will help ascertain our next troubleshooting actions. Scope of impact: Admins attempting to view device inventory and update status information in the Microsoft 365 Apps admin center may be affected. This information may be updated as our investigation continues. Start time: Thursday, August 20, 2026, at 12:00 AM UTC Next update by: Sunday, August 23, 2026, at 9:00 PM UTC