Exhibit 10.104

BlackRock Fund Advisors

Attention: Tim Meyer

400 Howard Street San

Francisco, California 94105

March 17, 2015        

Dear Tim:

Reference is hereby made to the Amendment (MSCI reference: AMD_00105603.0) dated December 10, 2013 (“Amendment”) to the Index License Agreement for Funds dated March 18, 2000 (“Agreement”) by and between MSCI Inc. (formerly known as Morgan Stanley Capital International Inc.) (“MSCI”) and BlackRock Institutional Trust Company, N.A. (formerly known as Barclays Global Investors, N.A.) (“Licensee”). All capitalized terms used but not defined herein shall have the meanings ascribed to them in the Amendment or the Agreement, as the case may be.

MSCI and Licensee hereby agree to modify the Amendment as follows:

A.N.: 130339

AMD_00165372

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The parties acknowledge that the Agreement was previously amended by, among other amendments, the Amendment. This letter modifies and operates in conjunction with the Previous Amendment and the Amendment. Together this letter, the Amendment and the Agreement constitute the complete and exclusive statement of the agreement between the parties with respect to the subject matter hereof and supersede in full all prior proposals and understandings, oral or written, relating to such subject matter. To the extent that any terms of this letter conflict with any terms of the Amendment or the Agreement, the terms of this letter shall control. This letter shall be governed by, and construed in accordance with, the laws of the State of New York without regard to its conflict or choice of laws principles.

Please indicate your agreement with the foregoing by countersigning and returning a copy of this letter.

Very truly yours,

MSCI Inc.