By default, administrators don’t have access to any OneDrive.
However,it’s possible to grant access to the accounts of your choice.

This article shows how to manually grant permissions.

Manually create an Administrator account for OneDrive

  • Go the the SharePoint admininistration center.
    Give permissions to OneDrive
  • Select “User profiles”.
  • Under “People” select “Manage User Profiles”.
    Give permissions to OneDrive
  • In the search bar, enter the username that you are looking for.
  • Once you have found your user, select the “down arrow” and select “Manage Site Collection Owners”.
    Give permissions to OneDrive
  • Under “Site Collection Owners”, add the admin account that you want authorize access.Give permissions to OneDrive