Microsoft Copilot (Microsoft 365): [Copilot Extensibility] Full refresh of custom connectors datasource

🚨 The Signal: Admins can now fully refresh custom connector data sources for Microsoft Copilot via Graph APIs. This automatically deletes items removed from the source, improving data hygiene and reducing manual deletion tasks for agentic AI data.

The Impact

Admins and developers are affected; the risk is reduced data exposure from stale or deleted information in Copilot custom connectors.

• Admins: Reduced risk of Copilot accessing outdated or deleted sensitive data.
• Developers: Streamlined data source management for custom connectors.
• Security Teams: Better control over data exposed to Copilot via connectors.

The Action

1. Review existing custom connectors for Copilot to ensure appropriate data sources are configured.
2. Familiarise with Graph API calls for full data source refresh and sync for custom connectors.
3. Implement regular full refresh schedules for critical custom connector data sources.
4. Verify that deleted items in source systems are correctly removed from Copilot's accessible data.

Domain: Agentic-AI · Impact: medium · Workload: Other