March 2026 CU for SharePoint Server Subscription Edition: Key Considerations
The March 2026 Cumulative Update for SharePoint Server Subscription Edition is now available. Ensure a smooth upgrade by addressing a critical security configuration.
March 2026 CU for SharePoint Server Subscription Edition: Key Considerations
The March 2026 Cumulative Update (CU) for SharePoint Server Subscription Edition is now available. This update includes critical fixes and improvements to enhance the security and performance of your SharePoint environment.
Important: If your current farm patch level is the September 2025 CU, you must remove the NT Authority\system account from the WSS_WPG and IIS_IUSRS local security groups on your SharePoint servers before applying this update. Failure to do so will cause the SharePoint fixes to fail during installation. Refer to this article for detailed instructions.
You can download the update package here.
Before applying any CU, it's highly recommended to thoroughly review the release notes and test the update in a non-production environment. This proactive approach minimizes potential disruptions and ensures a seamless transition.
Microsoft provides comprehensive documentation and support resources to assist you throughout the update process. If you encounter any issues during the update, consult the official Microsoft documentation or contact Fiboo's expert consultants for assistance. We can help ensure a smooth and successful update, minimizing downtime and maximizing the benefits of the latest improvements.