Summary
- Copilot features in Microsoft Viva Glint will no longer be available to Microsoft Entra cross-tenant guest users (B2B collaboration guest users).
- Affected Copilot experiences include Copilot Highlights in summaries, the Copilot button/chat panel for comment summarization, and the Copilot Summarize option in comments.
- This is a service limitation in the underlying Copilot LLM experience, not a licensing issue and not controlled by Viva Feature Access Management (VFAM) policies.
- No administrative configuration changes are required, but admins should review whether guest users participate in Viva Glint programs and prepare support teams for user questions.
Starting August 26, 2026, Microsoft Viva Glint’s Copilot features will be unavailable to Microsoft Entra cross-tenant guest users due to underlying service limitations. Affected users will no longer see Copilot functionalities, but other Viva Glint features remain unchanged. No admin action or Copilot license assignment will restore access.
Microsoft 365 Message Center ID: MC1469961
Primary Service: Viva
Admin Impact: Low
User Impact: Medium
Release Start: 26 Aug 2026
Release End: 26 Aug 2026
Last Modified: September 10, 2026
Category: Plan for change
Tags: New feature
Status: Launched
Products & Platforms: Microsoft Viva, Microsoft Copilot (Microsoft 365)
History
9/9/2026 Item Added to Message Center
Microsoft Message
Beginning August 26, 2026, Copilot features in Microsoft Viva Glint are no longer available to Microsoft Entra cross-tenant guest users (B2B collaboration guest users).
Copilot in Viva Glint relies on Microsoft Copilot large language model (LLM) services. These underlying services do not currently support cross-tenant guest users. Previously, affected users might have experienced authentication errors or Copilot features that failed to load. To provide a more consistent experience, Viva Glint now hides the affected Copilot features for these users instead of displaying errors.
This change is not related to licensing or Viva Feature Access Management (VFAM) policy settings.
Rollout schedule
General Availability (Worldwide): Rollout began in late August 2026 and is expected to complete in late September 2026
Impact on your organization
Who is affected
- Microsoft Entra cross-tenant guest users who access Viva Glint in your tenant
- Viva Glint administrators and support teams that support those users
Platforms and services
- Microsoft Viva Glint
- Microsoft Entra ID
What will happen
For cross-tenant guest users, the following Copilot capabilities are no longer available in Viva Glint:
- Copilot Highlights in Team Summary and Executive Summary reports
- The Copilot button and chat panel used for comment summarization
- The Copilot Summarize option in comments panels
The following experiences are unchanged:
- Surveys
- Dashboards
- Reports
- Comments and related Viva Glint functionality
- Existing VFAM policies
- Viva Glint user roles and permissions
- Viva Glint licensing requirements
- Copilot experiences for users whose accounts are homed in your tenant
A Microsoft Copilot license is not required for Copilot in Viva Glint. Assigning a Microsoft Copilot license to a cross-tenant guest user will not restore access to the affected features because the limitation exists in the underlying Copilot service.
No administrative configuration changes are required.
Action required and recommendations
No action is required.
We recommend that you:
- Review whether any Microsoft Entra guest users participate in your Viva Glint programs.
- Inform HR, people analytics, and survey program owners that affected guest users will no longer see Copilot features in Viva Glint.
- Review existing support requests involving Copilot errors or authentication failures for Viva Glint guest users, as they may be related to this service limitation.
Compliance considerations
No compliance considerations identified, review as appropriate for your organization.