FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * MATHEW MICH   2. Issuer Name and Ticker or Trading Symbol MICROSOFT CORP [MSFT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior Vice President (Last) (First) (Middle) ONE MICROSOFT WAY 3. Date of Earliest Transaction (Month/Day/Year) 05/19/2005 (Street) REDMOND, WA 98052-6399 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock               38,048 (1) D   Common Stock               1,595 (2) I By 401(k) Common Stock               499,201 I By Spouse

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Performance Rights

$ 0 (3)

05/19/2005

A

61,111 (4) (5)

08/31/2006(6)

08/31/2008

Common Stock

61,111 (4) (5)

$ 0

61,111 (4) (5)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MATHEW MICH ONE MICROSOFT WAY REDMOND, WA 98052-6399			Senior Vice President

Signatures

Keith R. Dolliver, Attorney-in-Fact for Michelle J. Mathews		05/19/2005
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Includes 689 shares acquired on March 31, 2005 under the Microsoft Employee Stock Purchase Plan.
(2)	401(k) balance as of April 30, 2005
(3)	1-for-1
(4)	As a result of a promotion to Senior Vice President, the reporting person received an increase in the number of specified performance target shares under a shared performance stock award ("SPSA") previously reported on a Form 5 filed on August 13, 2004.
(5)	The number of shares ultimately received depends on the company's performance against specified performance targets. At the end of the performance period, the number of shares of stock and stock awards will be determined by adjusting upward or downward from a target in a range between 33% and 150%. The number reported herein is based on the 33% minimum. The final performance percentage on which the payout will be based, considering company performance metrics established for the performance period, will be determined by the board or a board committee in its sole discretion. Shares of stock are issued at the end of the performance period and as the stock awards vest over the following two years, provided that the reporting person remains continuously employed through the applicable vest date.
(6)	One-third of the number of shares of common stock ultimately awarded under the SPSA will be distributed to the reporting person on or about August 31, 2006 (the "initial vest date"), an additional one-third shall vest and distributed to the reporting person on each of the first and second anniversaries of the initial vest date, provided that the Reporting Person remains continuously employed through the applicable vesting date.

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