Investor Relations

You can contact Microsoft's Investor Relations group at any time to order financial documents such as annual reports and Form 10-Ks.

Call us toll-free at (800) 285-7772 or outside the United States, call (425) 706-4400. We can be contacted during West Coast business hours to answer investment oriented questions about Microsoft.

For access to additional financial information, visit the Investor Relations website online at:

www.microsoft.com/investor

You may also contact by fax at (425) 706-8000.

Our e-mail is msft@microsoft.com

Additionally, our mailing address is:
   Investor Relations
   Microsoft Corporation
   One Microsoft Way
   Redmond, Washington 98052-6399

Annual Meeting

8 a.m. November 9, 2004 Meydenbauer Center 11100 NE 6th Street Bellevue, Washington 98004

Secure Your PC

Find out how to help protect your PC against viruses, hackers and other security issues at:

http://www.microsoft.com/security

Registered Shareholder Services

Mellon Investor Services, our transfer agent can help you with a variety of shareholder related services including:

• Change of address
• Lost stock certificates
• Transfer of stock to another person
• Additional administrative services

Mellon Investor Services also administers a direct stock purchase plan and a dividend reinvestment program for the company.

To find out more about these services and programs you may contact Mellon directly at 800-285-7772, option 4 between the hours of 6:00 a.m. and 4:00 p.m. Pacific time, Monday through Friday or visit Mellon's Investor Service Direct(SM) online at:

http://www.melloninvestor.com

You can e-mail the transfer agent at:

msft@melloninvestor.com

You can also send mail to the transfer agent at:
   Mellon Investor Services
   P.O. Box 3315
   South Hackensack, NJ
   07606-1915

Shareholders of record who receive more than one copy of this annual report can contact our transfer agent and arrange to have their accounts consolidated. Shareholders who own Microsoft stock through a brokerage account can contact their broker to request consolidation of their accounts.

Shareholders can sign up for electronic alerts to access the Annual Report and Proxy Statement online. The service gets you the information you need faster and also gives you the power and convenience of online proxy voting. To sign up for this free service, visit the Open Enrollment site on the Investor Relations website at: