Retirement: Microsoft Sentinel Deprecation in Microsoft Azure operated by 21Vianet Announcement

We continuously assess our services to uphold the high standards of protection and reliability for our customers. After a thorough evaluation, we have determined that due to increasing infrastructure and operational complexity, it is no longer feasible to maintain the expected levels of stability and effectiveness for Microsoft Sentinel in [Microsoft Azure operated by 21Vianet,](https://learn.microsoft.com/en-us/azure/china/overview-operations) also known as Azure in China. As a result, we plan to retire and remove all features and services related to Microsoft Sentinel within Microsoft Azure operated by 21Vianet on August 18, 2026\. After this date, customers will no longer be able to access the Microsoft Sentinel portal, or any associated Microsoft Sentinel services or features in this environment operated by 21Vianet. **Action required** We are committed to supporting customers through this transition. Customers are advised to work with their account representatives for Microsoft Azure operated by 21 Vianet to assess the impact of this retirement on their own operations within Microsoft Azure operated by 21Vianet. For further details, visit this documentation page.