The limitations of Kerberos protocol that is being used by the Microsoft virtual server are as follows:

• There is no provision to apply group policies to virtual server. This means that there is no provision to apply policies on the applications that are running on virtual server. Virtual server object can't define group policies using this protocol.

• Kerberos protocol provides clustering option but it is limited to a certain server computer object. This object is being managed by active directory by default.

• There is no provision to rename a network name resource and change the configuration of kerberos authentication at same time. As the actions will be performed the changes will automatically be reflected on it.