Posted inMicrosoft 365 suite

MC1526676: Microsoft 365 Admin Center Adds Authoritative Source Management for Copilot Search

3 minutesPosted inMicrosoft 365 suite
MWPRO IMPACT SCORE
OPERATIONAL IMPACT
52
0 25 50 75 100
HIGH IMPACT • REVIEW RECOMMENDED
Recommended Action:
Review the update and plan any required actions before rollout.
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Primary Audience

Microsoft 365 AdminsTenant AdminsSharePoint AdminsIT ManagersService OwnersSecurity TeamsCompliance Teams
Why this score?
AI Confidence
HIGH
Enough detail is available to trust this assessment.
Assessment Reasoning
This is a new control in the Microsoft 365 admin centre letting global admins and readers manage authoritative SharePoint sites for Copilot Search. It introduces governance settings with AI data implications but requires no immediate change if not adopting Copilot Search governance. Admin impact is moderate due to configuration and review of authoritative sources, while user effect is indirect through improved search relevance. Rollout timing has just started, so urgency is moderate for planning and testing.
65
🛡️ Admin Impact
HIGH
35
👥 User Impact
MEDIUM
45
⚡ Urgency
MEDIUM
50
🔧 Effort
HIGH
ℹ️ WHAT YOU NEED TO KNOW
📌

AT A GLANCE

Admins can now manage authoritative SharePoint sites for Copilot Search in the Microsoft 365 admin centre. This helps prioritise trusted internal content in search results.
👥

END USERS

Search results in Copilot may prioritise certain SharePoint sites as authoritative content.
🛡️

IT ADMINS

Global admins and readers can add, edit, or delete up to 100 authoritative SharePoint sites to improve search relevance.
📅

ROLLOUT TIMELINE

Available:
Now

📢 Official Microsoft Message Center Announcement

Microsoft 365 admin center: Manage authoritative sources for Microsoft 365 Copilot Search
Message ID: MC1526676

[What and Why:]

This new capability enables admins the capability to manage Authoritative sources within the Copilot Search experience in the Microsoft 365 Admin Center. As part of current change admins will be able manage SharePoint Online (SPO) sites that can be deemed as authoritative content per their organization.

  • Available only to Global admin and Global reader role.

[Rollout Schedule:]

Public Preview (Worldwide): We will begin rolling out on late September 2026 and expect to complete by late September 2026.

General Availability (Worldwide): We will begin rolling out on late September 2026 and expect to complete by late September 2026.

[Impact on Your Organization:]

This will help enhance relevance and ranking of these SharePoint sites.

The feature introduces a centralized governance layer in Copilot Control Systems, allowing admins to:

  •  View, add, delete the authoritative SharePoint sites via the UX.
  •  Will be able to bulk import or export these sources.
  •  The admins can add only up to 100 sites as authoritative.

[Action Required/Recommendations:]

This feature is available to Global admin and Global reader roles.

[Compliance considerations:]

Does the change introduce or significantly modify AI/ML or agent capabilities that interact with or provide access to customer data?Yes. The feature uses AI/ML or agent capabilities with Microsoft 365 content, prompts, or service data as described in this message.
Does the change provide end users any new way of interacting with generative AI?Yes. The feature introduces or updates a user-facing AI or Copilot experience as described in this message.
Does the change include an admin control and, can it be controlled through Entra ID group membership?Yes. The feature includes or affects admin controls, policies, permissions, roles, authentication, or management settings as described in this message. Review the linked documentation or admin center controls for group-based configuration support.

Source: Microsoft Message Center • Analysed by MWPro

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