Hi,
After configuring a trial intune subscription I got a funny error in the CloudUserSync log:
ERROR: SetLicensedUsers exception The Dmp Connector cannot connect to Windows Intune. Verify that you are connected to the Internet,….
UserSync: Failed to perform delta sync. error = Unknown error 0x8013150C, 0x8013150C
further down in the log file :
ERROR: GetServiceAddresses – LSU cannot be reached: System.ServiceModel.ProtocolException: The content type text/html; charset=UTF-8 of the response message does not match the content type of the binding (application/soap+xml; charset=utf-8). If using a custom encoder, be sure that the IsContentTypeSupported method is implemented properly
If you search for this error you can see this happening with other services as well (Azure) and it is where the binding from your local server doesn’t match the endpoint (in this case intune/Azure)
Turned out that the customer provide me with a demo lab environment and it was still sitting on System Center Configuration Manager R2 Preview 
#Notetomyself : Check all components on the correct versioning before you start . Never take it for granted 
Hope it Helps ,
Kenny Buntinx
Enterprise Client Management MVP