Thanks for the response @Christopher.
1. Account is not new at all, more than 5 years old. I have office 365 Home subscription with 1Terabyte OneDrive
2. On Windows Server 2012 R2
3. CloudDrive version 1.0.0.463
4. Using @outlook.com
I've had this problem ever since installing the program over a week ago, kept trying and decided to open a ticket today.
No problem authenticating and using CloudDrive with Google, Dropbox and Amazon Cloud Drive.