REDMOND, Wash. — May 11, 2009 — Microsoft Corp. today announced the pricing of its offering of $3.75 billion of senior unsecured notes. The notes consist of the following tranches:

Microsoft intends to use the net proceeds from the offering for general corporate purposes, which may include funding for working capital, capital expenditures, repurchases of stock and acquisitions. The offering is expected to close on May 18, 2009.

A copy of the prospectus relating to the offering is available from J.P. Morgan Securities Inc., Morgan Stanley & Co. Inc. or any of the other underwriters of the offering.

Founded in 1975, Microsoft (Nasdaq “MSFT”) is the worldwide leader in software, services and solutions that help people and businesses realize their full potential.

For more information, financial analysts and investors only:

Investor Relations, Microsoft, (425) 706-3703

For more information, press only:

Rapid Response Team, Waggener Edstrom Worldwide, (503) 443-7070, rrt@waggeneredstrom.com

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