The attempt to initialize the shadow copy service failed for this instance of Active Directory Domain Services. User Action: ...

The attempt to initialize the shadow copy service failed for this instance of Active Directory Domain Services. 
 
User Action: 
Ensure that the VSS Access Control key below has a registry value (with the same name as the service account for which this instance of AD DS is running) under it with a value of 1. 
 
Additional Data: 
Registry Key: 
%1