As you may already know you were/are able to authorize or block the use of third party storage providers – like Dropbox – and/or OneDrive (personal).
To do so, you had 2 parameters to manage it
- OneDriveAttachmentsEnabled
- ThirdPartyFileProvidersEnabled
Well, by August 30, these parameters will be replaced by a single one: AdditionalStorageProvidersAvailable
This new parameter is turned on by default.
It is recommended to review your OWAMailboxPolicy (Get-OwaMailboxPolicy) and review if you already have this parameter available to set his value to match your policy
