🚀 Overview: Troubleshooting Microsoft 365 Copilot with Diagnostic Tools

Microsoft 365 Copilot serves as an integrated AI orchestration layer that enhances productivity across the Microsoft 365 ecosystem. However, because Copilot is comprised of several underlying sub-services, users may occasionally find specific features—such as Copilot in Teams or Excel—missing or inactive despite having a valid license. This discrepancy is often rooted in the specific service plans enabled within the user’s account.

To streamline troubleshooting, Microsoft provides IT administrators with a specialized self-help diagnostic tool located within the Microsoft 365 admin center. By utilizing a user’s Email address or User Principal Name (UPN), this tool generates a comprehensive inventory of all assigned Copilot service plans. This guide explains how to deploy this tool to verify feature availability and resolve synchronization discrepancies between the administration interface and the backend service state.

🛡️ Prerequisites and RBAC Requirements

Before attempting to access the diagnostic suite, ensure you meet the following administrative requirements:

• Role Membership: You must be signed in with the AI administrator role.
• Least Privilege Principle: While Global Administrators have access, Microsoft highly recommends using the AI administrator role to limit unnecessary permissions and maintain a secure environment.

⚙️ Key Technical Details: Running the Diagnostic Tool

🧪 Deployment Steps: To audit a user’s specific entitlements, follow the sequence below in the Microsoft 365 admin center:

1. Navigate to the Microsoft 365 admin center and authenticate as an AI administrator.
2. On the left-hand navigation menu, expand Support and select Help and support.
3. In the search/prompt field, type copilot missing to trigger the specific diagnostic workflow.
   • Direct Access: Alternatively, you can navigate directly to Run Tests: Copilot Service Plan Diagnostic.
4. Click Run diagnostics.
5. When prompted, provide the Email address or User Principal Name (UPN) of the affected user.
6. Select Run tests to generate the entitlement report.

📋 Understanding the Service Plan Catalog

📅 The diagnostic tool output will return a list of service plan names. Each name corresponds to a specific functional capability within the Copilot ecosystem. Refer to the table below to map the diagnostic results to user-facing features:

Functional Feature	Diagnostic Service Plan Name
Microsoft Copilot Studio	Copilot Studio in Copilot for M365
Microsoft Graph Connectors	Graph Connectors in Microsoft 365 Copilot
Intelligent Search functionality	Intelligent Search
Copilot in SharePoint (Agents & Rich Text)	Microsoft 365 Copilot for SharePoint
Copilot in Microsoft Teams	Microsoft 365 Copilot in Microsoft Teams
Copilot in M365 Productivity Apps (Word, Excel, etc.)	Microsoft 365 Copilot in Productivity Apps
Microsoft 365 Copilot Chat (Work)	Microsoft Copilot with Graph-grounded chat
Power Platform Connectors	Power Platform Connectors in Microsoft 365 Copilot

🔧 Troubleshooting Common Synchronization Failures

⚠️ State Desynchronization: A known issue exists where the Microsoft 365 admin center UI indicates a service plan is “Enabled,” but the diagnostic tool (and the user experience) indicates it is “Missing.” This typically occurs in legacy accounts where new service plans have been added to an existing subscription but failed to propagate correctly.

Remediation Workflow: If you encounter a sync mismatch, perform the “Toggle Reset” procedure:

• Locate the affected user in the Active Users section of the Microsoft 365 admin center.
• Navigate to the Licenses and apps tab.
• Under the Apps section, uncheck the specific Copilot service plans that are failing.
• Save changes and wait a few moments.
• Re-check the service plans and Save changes again.
• Re-run the diagnostic tool to confirm that the service state is now synchronized.

⚠️ Impact on Administration and End Users

The lack of a specific service plan results in immediate feature degradation for the end user. For example, if Microsoft 365 Copilot in Productivity Apps is missing, the user will not see the Copilot icon in Word or PowerPoint, even if they have a Copilot license assigned at the SKU level.

By proactively using the diagnostic tool, IT admins can differentiate between a global service outage, a client-side caching issue, or a fundamental licensing configuration error. This ensures a faster Time-to-Resolution (TTR) and prevents unnecessary support escalations.

Official Source: Read the full article on Microsoft.com