You may want to restore an archived team and want to keep it around for reference or to reactivate it. Only team owners can archive and restore teams.
Step-by-step guide
- Logon to the Microsoft admin site using your O365 Admin credentials
- Select Teams in the Admin Centre on the left menu
- Under Teams, select Manage Teams
- Search for the Team name
- A Status column will tell if the Team has been archived.
- Select the Team so it is highlighted.
- Click on the Unarchive button to restore the Team.