check before: 2026-05-01
Product:
Copilot, Microsoft 365 Copilot, Microsoft Viva, Purview Information Protection
Platform:
Online, Web, World tenant
Status:
Rolling out
Change type:
Admin impact, New feature, Updated message, User impact
Links:
Details:
Summary:
Microsoft 365 Copilot will begin using private community and event content as grounding sources starting late May 2026, respecting existing permissions and sensitivity labels. This feature is enabled by default, cannot be disabled, and affects all Microsoft 365 tenants using Copilot. No user action is required.
Details:
Updated May 4, 2026: We have updated the timeline. Thank you for your patience.
[Introduction]
Microsoft 365 Copilot will begin using content from private communities and private events as grounding sources to generate responses. This change helps Copilot provide more relevant and context-aware answers by incorporating content that users already have access to, while continuing to respect existing permissions and security controls.
This message is associated with Microsoft 365 Roadmap ID 515144.
[When this will happen]
General Availability (Worldwide): We will begin rolling out this feature in late May 2026 and expect to complete the rollout by late June 2026.
Change Category:
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Scope:
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Release Phase:
General Availability
Created:
2026-05-01
updated:
2026-05-05
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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linked item details
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Pictures
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summary for non-techies**
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Direct effects for Operations**
Data Privacy Concerns
The use of private community and event content may raise concerns about data privacy and security, as users might be unaware that their interactions are being influenced by this content.
- roles: Compliance Teams, Helpdesk Staff
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=515144#Roadmap
User Experience Changes
Users may experience changes in the relevance of responses from Copilot, which could lead to confusion if they are not informed about the new grounding sources being utilized.
- roles: End Users, IT Support Staff
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=515144#Roadmap
Increased Support Queries
The introduction of this feature may lead to an increase in support queries from users who are confused about the new content being referenced in Copilot responses.
- roles: Helpdesk Staff, IT Support Staff
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=515144#Roadmap
Configutation Options**
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Opportunities**
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Potentional Risks**
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Data Protection**
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IT Security**
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Hypothetical Work Council Statement**
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DPIA Draft**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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change history
| Date | Property | old | new |
| 2026-05-05 | MC Messages | [Introduction]
Microsoft 365 Copilot will begin using content from private communities and private events as grounding sources to generate responses. This change helps Copilot provide more relevant and context-aware answers by incorporating content that users already have access to, while continuing to respect existing permissions and security controls. This message is associated with Microsoft 365 Roadmap ID 515144. [When this will happen] General Availability (Worldwide): We will begin rolling out this feature in May 2026 and expect to complete the rollout by late June 2026. | Updated May 4, 2026: We have updated the timeline. Thank you for your patience.
[Introduction] Microsoft 365 Copilot will begin using content from private communities and private events as grounding sources to generate responses. This change helps Copilot provide more relevant and context-aware answers by incorporating content that users already have access to, while continuing to respect existing permissions and security controls. This message is associated with Microsoft 365 Roadmap ID 515144. [When this will happen] General Availability (Worldwide): We will begin rolling out this feature in late May 2026 and expect to complete the rollout by late June 2026. |
| 2026-05-05 | MC Title | Microsoft 365 Copilot will use private community and event content as grounding sources | (Updated) Microsoft 365 Copilot will use private community and event content as grounding sources |
| 2026-05-05 | MC Last Updated | 04/30/2026 18:18:17 | 2026-05-04T23:53:39Z |
| 2026-05-05 | MC MessageTagNames | New feature, User impact, Admin impact | Updated message, New feature, User impact, Admin impact |
| 2026-05-05 | MC Summary | Starting May 2026, Microsoft 365 Copilot will use private community and event content as grounding sources to generate responses, respecting existing permissions and sensitivity labels. This feature is enabled by default, cannot be disabled, and affects all Microsoft 365 tenants using Copilot. No action is required. | Microsoft 365 Copilot will begin using private community and event content as grounding sources starting late May 2026, respecting existing permissions and sensitivity labels. This feature is enabled by default, cannot be disabled, and affects all Microsoft 365 tenants using Copilot. No user action is required. |
Last updated 2 weeks ago ago
