November 28, 1:32am EST

Summary of Impact: Between 23:19 UTC on 27 Nov 2023 and 02:20 UTC on 28 Nov 2023, you were identified as a customer using Azure Cosmos DB in East US, who may have experienced Service Availability issues while performing Management operations in the Azure Portal or Azure CLI.

Preliminary Root Cause: We determined that this issue was caused due to an inadvertent human error when trying to perform a preventative mitigation.

Mitigation: The mitigation involved restoring the affected configurations to their prior state.

Next Steps: We will continue to investigate to establish the full root cause and prevent future occurrences. Stay informed about Azure service issues by creating custom service health alerts: https://aka.ms/ash-videos for video tutorials and https://aka.ms/ash-alerts for how-to documentation.

November 28, 1:41am EST

Summary of Impact: Between 23:19 UTC on 27 Nov 2023 and 02:20 UTC on 28 Nov 2023, you were identified as a customer using Azure Cosmos DB in East US, who may have experienced Service Availability issues while performing Management operations in the Azure Portal or Azure CLI.

Preliminary Root Cause: We determined that this issue was caused due to an inadvertent human error when trying to perform a preventative mitigation.

Mitigation: The mitigation involved restoring the affected configurations to their prior state.

Next Steps: We will continue to investigate to establish the full root cause and prevent future occurrences. Stay informed about Azure service issues by creating custom service health alerts: https://aka.ms/ash-videos for video tutorials and https://aka.ms/ash-alerts for how-to documentation.