You see a red banner in the Copilot pane that says you do not meet the license prerequisites. The Copilot chat interface may load, but every prompt returns a message about missing entitlements. This error occurs because your tenant or user account lacks a required Microsoft 365 subscription or the Copilot add-on license. This article explains the specific license requirements and provides the exact steps to assign or purchase the correct licenses so Copilot works.
Key Takeaways: Fixing the Copilot License Prerequisite Error
- Microsoft 365 admin center > Billing > Licenses: Verify each user has a qualifying base plan such as Microsoft 365 E3 or E5 before the Copilot add-on can be assigned.
- Microsoft 365 admin center > Billing > Purchase services: Buy the Microsoft 365 Copilot add-on for each user who needs generative AI assistance in Office apps.
- Microsoft 365 admin center > Users > Active users: Assign the Copilot add-on license to each user individually after the base plan is active.
Why the Copilot License Prerequisite Error Appears
Copilot for Microsoft 365 is not a standalone product. It requires an underlying Microsoft 365 subscription plan that includes Exchange Online, SharePoint Online, and Microsoft Teams. The most common cause of the prerequisite error is that the user has a Microsoft 365 Business Basic or Business Standard plan without the Copilot add-on. Another cause is that the tenant uses an Education or Government plan that is not yet supported for Copilot. The error also appears if the Copilot add-on license is purchased but not assigned to the user in the admin center.
Microsoft enforces these prerequisites because Copilot relies on Microsoft Graph to access user data, calendar, documents, and meetings. Without the base plan, Copilot cannot authenticate against the correct service endpoints. The error message is designed to prevent users from attempting to use Copilot without the required infrastructure.
Supported Base Plans
The following Microsoft 365 plans qualify for the Copilot add-on:
- Microsoft 365 Business Basic, Business Standard, Business Premium
- Microsoft 365 E3, E5, F1, F3
- Office 365 E3, E5
- Microsoft 365 A3, A5 for faculty and staff only
Education student plans, Government Community Cloud plans, and Office 365 E1 do not qualify. If your tenant uses one of these unsupported plans, you will see the prerequisite error for all users.
Steps to Assign the Missing Copilot License
Follow these steps in the Microsoft 365 admin center to resolve the license prerequisite error. You must have Global Admin or Billing Admin permissions.
- Verify the user base plan
Go to the Microsoft 365 admin center at admin.microsoft.com. Select Users then Active users. Click the user who sees the error. In the right pane, look at the Licenses and apps tab. Confirm the user has a qualifying base plan such as Microsoft 365 Business Standard or Microsoft 365 E3. If the user has no base plan, assign one from the Licenses page before continuing. - Buy the Copilot add-on license
In the admin center, go to Billing then Purchase services. Search for “Microsoft 365 Copilot”. Select the add-on and choose the quantity equal to the number of users who need Copilot. Complete the purchase. The add-on license appears under Billing then Licenses after the order processes. - Assign the Copilot add-on to a user
Go to Users then Active users. Select the user. Open the Licenses and apps tab. Under Licenses, check the box for Microsoft 365 Copilot. Click Save changes. The prerequisite error disappears within 15 minutes for most users. - Check the license assignment status
After saving, refresh the Copilot pane in any Office app. Press F5 in the browser if using Copilot on the web. The red error banner should be replaced by the normal Copilot chat interface. If the error persists, sign out of all Office apps and sign back in to trigger a license re-evaluation.
If Copilot Still Shows the License Error After Assignment
Copilot add-on shows as assigned but error remains
This happens when the license assignment did not propagate to the user session. Sign out of all Microsoft 365 apps and the web portal. Close all browser tabs. Wait five minutes. Sign back in and open Copilot. If the error still appears, go to the admin center and remove the Copilot license from the user, save, then re-add it. This forces a fresh license sync.
Copilot add-on license is not visible in the purchase list
The Copilot add-on may not appear if your tenant is in a region that is not yet supported. Check the Microsoft 365 Copilot availability page for your country or region. If your region is supported, contact Microsoft 365 billing support to enable the add-on for your tenant. Some trial tenants also block the purchase of paid add-ons until the trial expires.
Multiple users see the error at the same time
This indicates the tenant itself does not have the Copilot add-on purchased. Go to Billing then Licenses in the admin center. Look for an entry named “Microsoft 365 Copilot”. If the entry is missing, purchase the add-on for at least one user. If the entry exists but shows zero available licenses, purchase more licenses. Assign the licenses to all affected users.
| Item | Qualifying Base Plan | Non-Qualifying Plan |
|---|---|---|
| Business plans | Business Basic, Standard, Premium | Business Essentials, Business |
| Enterprise plans | E3, E5, F1, F3 | E1, F1 without Exchange |
| Education plans | A3, A5 faculty/staff | A1, A3, A5 students |
| Government plans | Not yet supported | GCC, GCC High, DoD |
You can now identify, purchase, and assign the correct Microsoft 365 Copilot license to resolve the prerequisite error. Start by confirming that each user has a supported base plan. Then buy the Copilot add-on in the admin center and assign it to each user individually. For persistent errors, remove and re-add the license to force a sync. If your tenant uses an Education or Government plan that is not listed as supported, check the Microsoft 365 Roadmap for upcoming availability dates.