When we try to pin a particular view for entities say " Contacts " in Microsoft Dynamics CRM 2013 it is not possible for us to unpin the pinned view until and unless we pin any other view in Microsoft Dynamics CRM 2013 for the entity.

As per customer request we should be able to unpin a particular view for the entities say " Contacts " without pinning any other view in Microsoft Dynamics CRM 2013.