When migrating to or from OneDrive, your’re getting the following error:
“Start() Error for firstname.lastname@example.org : Get Source Conf Error : Guid should contain 32 digits with 4 dashes (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx).”
This message means that you have a configuration problem in your OneDrive source connector.
The AppID or AppRealm is incorrect.
Follow this article to configure it correctly: