MC1472007 - Manage who can upload advanced agents and plugins

Microsoft 365 Message Center announcement MC1472007.

MS Message Center's Summary

Microsoft is introducing a new administrative control for Microsoft 365 Copilot that governs who can upload advanced agents and plugins starting September 2026. Global rollout runs through October 2026. Uploads are enabled by default for all users unless administrators restrict access to specific individuals or Entra ID groups by October 25. Administrators should review their organizational governance policies and configure these settings before the default state applies.

Administrator impact
Administrators must configure new upload permissions in the Microsoft Admin Center by October 25 if they wish to restrict advanced package deployments beyond the default setting.
End user impact
End users will be subject to new organizational restrictions regarding which individuals can upload advanced Copilot agents and plugins.
Importance
6/10: This change introduces new governance controls that require administrative review and configuration to prevent unintended advanced agent uploads across the tenant.

Microsoft Summary

Starting September 25, Microsoft 365 admins can control who uploads advanced Copilot agents and plugins, limiting access to specific users or Entra ID groups. This governance feature rolls out worldwide by October 2026, with default uploads enabled unless admins configure restrictions by October 25. Basic uploads remain unaffected.

Message Center ID
MC1472007
Category
plan For Change
Severity
normal
Services
Microsoft Copilot (Microsoft 365)
Tags
New feature, Admin impact
Published
2026-09-14
Last updated
2026-09-15
Expires
2026-12-30

[What and Why:] To help organizations manage the deployment of advanced Copilot extensibility scenarios, we are introducing a new admin control that determines who can upload advanced agents and plugins. This enhancement strengthens enterprise governance and manageability by allowing administrators to limit advanced-package uploads to specific users or Microsoft Entra ID groups while maintaining flexibility for organizations that want broader access. [Rollout Schedule:] General Availability (Worldwide): Rollout begins September 25th Expected completion by the end of October 2026. [Impact on Your Organization:] Who is affected: Microsoft 365 administrators responsible for managing Copilot agents and plugins. Organizations that allow users to upload advanced agents or plugins. Users who create or upload advanced agents and plugins after this feature becomes available. Platforms/Services: Microsoft 365 Copilot and Cowork surfaces Copilot agents Copilot plugins Microsoft Entra ID What will happen: On September 25th, the control will be visible in MAC (see Advanced package uploads screenshot) and admins will have until October 25th to select their preference of all users, no users or specific users or groups. Starting October 25th, Advanced-package uploads will be enabled by default unless the admin has selected no users or specific users or groups. Admins can configure uploads for all users, selected users, Entra ID groups, or no users. Basic package uploads remain allowed and are not impacted. The setting applies only to advanced agents and plugins uploaded after the control becomes available. No action is required to maintain current behavior, [Action Required/Recommendations:] Review the advanced-package upload setting when it becomes available on September 25th. Determine whether advanced-package uploads should be available to all users, selected users, groups, or no users prior to October 25th. Update internal administrator and help desk documentation as needed. Inform support teams of the new governance control. If no action is taken, advanced-package uploads remain allowed by default. [Compliance Considerations:] The change introduces new administrative governance controls for advanced agents and plugins. The feature supports administration through Microsoft Entra ID group membership.