Fix Microsoft Planner Tasks Missing Comments or Attachments

Allow at least 24 to 48 hours to pass after creating the new Planner plan to ensure backend services have finished setting up.

Reload the Microsoft Planner web page in your browser or restart the desktop application to force a sync with the server.

Click on any task card within the affected plan to verify if the 'Add attachment' and 'Comments' fields have successfully appeared.

Navigate to the Planner hub and open an older, existing plan to check if the comment and attachment options function correctly there.

Ask another team member who has access to the newly created plan to open a task and see if they can view the missing options.

Reach out to your IT department to verify that your specific user account is properly licensed for Exchange Online, as Planner relies on it for task comments.

Note down the exact name of the affected Planner plan, the date it was created, and the specific missing features.

Reach out to your organization's Microsoft 365 administrator or internal IT helpdesk with the documented details.

Ask the administrator to check the Microsoft 365 admin center for any ongoing service degradation alerts or to open an official support ticket with Microsoft.