Getting Children of the users Personal Vault

[jmwileydev]

Hello,
I am writing an app which is accessing the user's personal "OneDrive" files. If I unlock my personal vault on the device the DriveItem for the "Personal Vault" shows up is properly marked as a folder. If I try to get the children of the "Personal Vault" I get back zero results.

var children = await _graphServiceClient!.Drives[_drive.Id].Items[folderItem.Id].Children.GetAsync();

The call returns a non-null DriveItemCollectionResponse but the value has no items.

Is there a special permission I need to add to my application permissions in order to see these items, or is there a different call that needs to be made.

Also, I noticed if the Personal Vault is not unlocked on the device then the DriveItem.Folder is null and the DriveItem.RemoteItem.Folder is null. Is there another way I can tell without the user unlocking this folder that it is a "Personal Vault"?

Cheers,
J.M.