Symptoms
Task to Install additional packages on node 'AD02.hosting.tld' according role SDC fails with error:
OBJREF:SharedNodeRegistrator:0:NodeRoles.ManagerPrivate:0
Last execution output Command 'cscript.exe //nologo .\checkIsDomainController.vbs' execution failed with code 1: This is not Domain Controller server
Cause
The error may occurred if second domain controller was added to domain manually due to bug #POA-90392
Resolution
Remove second DC from domain and retry the procedure.