Indexed Views does not using the index of the view

Problem:

Indexed Views does not using the index of the view...

Solution:

Add WITH (NOEXPAND) to the select (after the view):

FROM dbo.indexedViewName iv WITH (NOEXPAND)

But why the optimizer didn't use the index of the view without this hint?

If a query contains references to columns that are present both in an indexed view and base tables, it can happen....

Note: in order to use NOEXPAND, those settings must set to be ON: 

• ANSI_NULLS
• QUOTED_IDENTIFIER
• ANSI_WARNINGS
• CONCAT_NULL_YIELDS_NULL
• ANSI_PADDING
• ARITHABORT