REDMOND, Wash. — December 3, 2007 — Microsoft Corp. today announced participation in the following upcoming events with the financial community. Interested parties can view a webcast of these events on Microsoft’s Investor Relations Web site at http://www.microsoft.com/msft.

NASDAQ Annual Investor Program
Wednesday, December 5, 2007
2:45 p.m. GMT (6:45 a.m. PST)
Jean-Philippe Courtois, president, Microsoft International

Live Meeting Series: Virtualization
Thursday, December 20, 2007
1:00 p.m. PST
Larry Orecklin, general manager, Virtualization Marketing

Founded in 1975, Microsoft (Nasdaq “MSFT”) is the worldwide leader in software, services and solutions that help people and businesses realize their full potential. Microsoft is a registered trademark of Microsoft Corp. in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.

For more information, press only:

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

For shareholder and financial information:

http://www.microsoft.com/msft

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