Missing Class Team? It may have been deleted, here is a guide on how to restore a deleted Team!
A Team consists of an Office 365 groups, SharePoint site and a Microsoft Team. There are many ways to restore these deleted components but if you want to quickly restore the entire Team, follow the steps below:
Login as an Office 365 global admin (or delegated admin role), open the exchange admin centre (the link to this is on the left side of the main Office 365 admin centre).
Go to “Groups” under the “recipient” menu heading.
If you have more than 500 teams, click the “Get All Results” option and wait for the groups to finish enumerating.
Sort the groups by status to see the deleted Teams easily. Select the Team to restore and “Click here to restore”.
Confirm when prompted to restore the team.
A few minutes later, the Team will be back!