How to allow list a domain in Google Classroom


Unable to add a user (teacher or student) from an external domain to Google Classroom.


  • Google Workspace for Education
  • Workspace for Nonprofits Workspace Basic
  • Business Google Workspace for Education Plus


  1. Log in to the Admin console.
  2. Navigate to MenuApps.
  3. Choose an option. If your account is:
    • Google Workspace for Education or Workspace for Nonprofits—Click Google Workspace Classroom.
    • Workspace Basic, Business, or Google Workspace for Education Plus—Click Additional Google Services > Classroom.
  4. Click Class settings.
  5. Next to View configured allowlisted domains, click Edit > Add new.
  6. Enter the full address of the domain and click Add Domain To Allowlist.
    Note: Changes can take up to 24 hours to take effect. 


Student or teach is unable to join a class.