Microsoft 365 Copilot: Customize Copilot for your organization with Copilot Tuning – public preview

Microsoft 365 Copilot Tuning public preview (mid-February to late March 2026) introduces customizable agent templates in Agent Builder for organizations with 5,000+ Copilot licenses. It uses tenant-isolated SharePoint snapshots for tuning, with admin controls for access, data privacy safeguards, and regional processing considerations. Microsoft 365 Copilot Tuning is introducing new templates in Agent Builder designed for tasks such as drafting complex documents, validating documents against organizational guidelines, and editing to match a distinct writing style. Users with Copilot Tuning enabled can further customize the template-based agents by tuning the context, tools, and underlying models with their organization’s proprietary data, processes, and standards. This empowers your teams with customized agents aligned to how your organization works. When this will happen Public preview (Worldwide): We will begin rolling out in mid‑February 2026 and expect to complete by late March 2026. How this affects your organization Who is affected: All Microsoft 365 tenants with Microsoft 365 Copilot licenses. Agent tuning is available to organizations with 5,000 or more Microsoft 365 Copilot licenses. What will happen: New agent templates will become available in Agent Builder for all users licensed for Microsoft 365 Copilot. Users can immediately use these templates to build agents for common Microsoft 365 tasks. Organizations with 5,000+ Copilot licenses can tune agents by adjusting: Context Tools Models Data handling, privacy, and residency Copilot Tuning creates a snapshot of user‑selected SharePoint content solely for tuning the agent. Snapshots are stored in a tenant‑isolated Microsoft 365 environment and are used only within the Copilot Tuning service. DLP policies applied to the source SharePoint content do not apply to the snapshot. During public preview: Snapshot data is retained while the tuned agent remains active. Snapshot data is deleted when the tuned agent is deleted. Data used for tuning may be retained for up to two years unless deleted earlier. Copilot Tuning does not change Microsoft 365 data commitments; all data remains within the Microsoft 365 service boundary under existing Microsoft 365 Copilot privacy and security commitments. Snapshot metadata may be requested through Microsoft Customer Support. Snapshots are not automatically updated; if underlying SharePoint content changes, […]

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