Some users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online

Title: Some users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users may have seen increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may have experienced increased error rates and failures, impacting multiple services including Microsoft Teams and Power Automate. Additionally, admins may have been unable to load app access management status data in the Microsoft Teams admin center. Final status: We've completed our roll back and confirmed through our telemetry monitoring that the service is functioning as expected. Scope of impact: Some users attempting to access app entitlement APIs in Exchange Online and admins attempting to access management status data in the Microsoft Teams admin center within Great Britain may have been impacted. Start time: Monday, March 9, 2026, at 6:30 AM UTC End time: Monday, March 9, 2026, at 9:00 PM UTC Root cause: A recent update to the AdminAppCatalog negatively affected the service's ability to correctly connect with the right endpoints. Next steps: - We'll continue to investigate the build update to identify where the issue occurred and how to prevent future occurrences. This is the final update for the event.

Title: Some users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Microsoft Teams and Power Automate. Additionally, admins may be unable to load app access management status data in the Microsoft Teams admin center. Current status: Our investigation of the 403 errors determined they are unrelated to the impact, and our ongoing analysis of the error patterns leads us to suspect that the build update is the source of the impact. We're monitoring the roll back as it progresses to ensure this fully resolves the issue and the volume of errors doesn't increase during peak traffic hours. Scope of impact: Some users attempting to access app entitlement APIs in Exchange Online and admins attempting to access management status data in the Microsoft Teams admin center within Great Britain may be impacted. Next update by: Tuesday, March 10, 2026, at 6:00 PM UTC

Title: Some users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Microsoft Teams and Power Automate. Additionally, admins may be unable to load app access management status data in the Microsoft Teams admin center. Current status: Upon further review, we've determined the build update hasn't been fully reverted yet. We're continuing to review the error patterns while the build is being rolled back to ensure the errors cease and we isolate the root cause with more certainty. Scope of impact: Some users attempting to access app entitlement APIs in Exchange Online and admins attempting to access management status data in the Microsoft Teams admin center within Great Britain may be impacted. Next update by: Monday, March 9, 2026, at 9:00 PM UTC

Title: Some users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users may see increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Microsoft Teams and Power Automate. Additionally, admins may be unable to load app access management status data in the Microsoft Teams admin center. Current status: While the roll back of the build update has completed, we're not seeing full recovery as expected, and we're reviewing the 403 errors we're observing in telemetry to determine our next steps. Scope of impact: Some users attempting to access app entitlement APIs in Exchange Online and admins attempting to access management status data in the Microsoft Teams admin center within Great Britain may be impacted. Next update by: Monday, March 9, 2026, at 7:00 PM UTC

Title: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Skype Teams, Power Automate, and Skype Messaging Bot API. Current status: The rollback of the build update is currently underway, we're currently monitoring its status and will provide further information in our next communications update once it has completed. Scope of impact: All users attempting to access app entitlement APIs in Exchange Online within Great Britain may be impacted. Next update by: Monday, March 9, 2026, at 6:00 PM UTC

Title: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Skype Teams, Power Automate, and Skype Messaging Bot API. Current status: We've identified that a recent build update that was deployed may be causing memory threshold issues. Whilst we are investigating the potential root cause of impact, we're in the process of reverting the update in order to mitigate impact. Scope of impact: Your organization is affected by this event, and some users attempting to access app entitlement APIs within Exchange Online may be impacted. Next update by: Monday, March 9, 2026, at 1:30 PM UTC

Title: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Skype Teams, Power Automate, and Skype Messaging Bot API. Current status: We've identified that user's are experiencing forest-wide memory threshold issues form the Exchange Online service. We're investigating whether this is related to irregularities with memory usage and are searching our logs to determine our steps to mitigate impact. Scope of impact: Your organization is affected by this event, and some users attempting to access app entitlement APIs within Exchange Online may be impacted. Next update by: Monday, March 9, 2026, at 12:30 PM UTC

Title: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online User impact: Users are experiencing increased error rates and failures when accessing app entitlement APIs within Exchange Online. More info: Users may experience increased error rates and failures, impacting multiple services including Skype Teams, Power Automate, and Skype Messaging Bot API. Current status: We're investigating a potential issue and are analyzing service telemetry to help us identify the root cause. Scope of impact: Your organization is affected by this event, and some users attempting to access app entitlement APIs within Exchange Online may be impacted. Next update by: Monday, March 9, 2026, at 11:00 AM UTC