Some admins may be unable to view usage reports in the Microsoft 365 admin center

A post-incident report has been published.

A post-incident report has been published.

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins were unable to view usage reports in the Microsoft 365 admin center. Final status: The deployment of the fix has completed and we've confirmed it successfully resolved the issue. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may have been impacted. Start time: Monday, May 18, 2026, at 11:00 PM UTC End time: Thursday, May 28, 2026, at 10:15 PM UTC Root cause: A recent service change related to a backend infrastructure migration contained a code issue which was causing impact. Next steps: - We're reviewing our service change procedures to better understand why the code issue wasn't detected prior to the migration. We'll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: Our fix is progressing as expected, and telemetry indicates that the issue is resolved for a majority of admins. We're continuing to closely monitor the rollout and expect it be fully saturated within the next 12 hours or sooner. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Start time: Monday, May 18, 2026, at 11:00 PM UTC Estimated time to resolve: We estimate that this issue will be resolved in the next 12 hours. Root cause: A recent service change related to a backend infrastructure migration contained a code issue which is causing impact. Next update by: Friday, May 29, 2026, at 12:30 AM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: We're continuing to deploy our fix via staged roll out. Based on our current progress, we expect the issue to be fully resolved within the next 24 hours. We expect admins to be able to view usage reports as the fix propagates throughout the affected environments. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Estimated time to resolve: We estimate that this issue will be resolved in the next 24 hours. Root cause: A recent service change related to a backend infrastructure migration contained a code issue which is causing impact. Next update by: Thursday, May 28, 2026, at 7:00 PM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: We identified a recent service change related to a backend infrastructure migration that contained a code issue, which is causing impact. We've validated a fix in our internal testing environment and have begun rolling it out to the affected environments. We'll continue to closely monitor this deployment and provide an estimated time to resolution as soon as it is available. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Root cause: A recent service change related to a backend infrastructure migration contained a code issue which is causing impact. Next update by: Thursday, May 28, 2026, at 1:30 AM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: We’ve developed and are validating a fix to potentially address the suspected cause of this issue to confirm our findings and potentially remediate the impact. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Next update by: Wednesday, May 27, 2026, at 8:00 PM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: We're continuing to await error messages seen when encountering this impact and HAR traces from some admins to assist with further debugging. Simultaneously, we're attempting to create a reproduction of impact within our internal testing environment for better analysis and to isolate the underlying source of impact. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Next update by: Wednesday, May 27, 2026, at 2:00 AM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: Our review of the reports API endpoint failures was inconclusive and didn't pinpoint a service issue that would lead to this impact. We'll continue to investigate available service-side data to potentially progress the investigation, though we're requesting that impacted admins provide additional supporting data, such as error messages seen when encountering this impact and a HTTP Archive format (HAR) trace, as this information will likely be needed to successfully investigate the problem further. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Next update by: Tuesday, May 26, 2026, at 8:30 PM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: We've identified failures occurring with a report API endpoint and are investigating these further to determine what's leading to this behavior, as well as our approach to mitigating the impact. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Next update by: Monday, May 25, 2026, at 6:30 PM UTC

Title: Some admins may be unable to view usage reports in the Microsoft 365 admin center User impact: Admins may be unable to view usage reports in the Microsoft 365 admin center. Current status: We're reviewing support provided information to determine our next troubleshooting steps. Scope of impact: Some admins attempting to view usage reports in the Microsoft 365 admin center may be impacted. Next update by: Monday, May 25, 2026, at 4:30 PM UTC