Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  Morfit G Mason
2. Date of Event Requiring Statement (Month/Day/Year)
03/11/2014
3. Issuer Name and Ticker or Trading Symbol
MICROSOFT CORP [MSFT]
(Last)
(First)
(Middle)
435 PACIFIC AVENUE, 4TH FLOOR
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
See Remarks
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN FRANCISCO, CA 94133
6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 66,865,530
I
See footnotes (1) (2)
Common Stock 4,420,000
I
See footnotes (1) (3)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Morfit G Mason
435 PACIFIC AVENUE
4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
ValueAct Holdings, L.P.
435 PACIFIC AVENUE, 4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
ValueAct Capital Master Fund, L.P.
435 PACIFIC AVENUE
4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
ValueAct Co-Invest Master Fund, L.P.
435 PACIFIC AVENUE
4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
VA Partners I, LLC
435 PACIFIC AVENUE, 4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
ValueAct Capital Management, L.P.
435 PACIFIC AVENUE, 4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
ValueAct Capital Management, LLC
435 PACIFIC AVENUE, 4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks
ValueAct Holdings GP, LLC
435 PACIFIC AVENUE, 4TH FLOOR
SAN FRANCISCO, CA 94133
  X     See Remarks

Signatures

By:/s/ G. Mason Morfit 03/21/2014
**Signature of Reporting Person Date

VALUEACT HOLDINGS, L.P. By: VALUEACT HOLDINGS GP, LLC, its General Partner By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

VALUEACT CAPITAL MASTER FUND, L.P. By: VA PARTNERS I, LLC, its General Partner By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

VALUEACT CO-INVEST MASTER FUND, L.P. By: VA PARTNERS I, LLC, its General Partner By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

VA PARTNERS I, LLC By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

VALUEACT CAPITAL MANAGEMENT, L.P. By: VALUEACT CAPITAL MANAGEMENT, LLC, its General Partner By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

VALUEACT CAPITAL MANAGEMENT, LLC By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

VALUEACT HOLDINGS GP, LLC By:/s/ George F. Hamel. Jr. 03/21/2014
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) Each reporting person listed herein disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that such person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.
(2) The securities reported herein are directly beneficially owned by ValueAct Capital Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) VA Partners I, LLC as General Partner of ValueAct Capital Master Fund, L.P., (ii) ValueAct Capital Management, L.P. as the manager of ValueAct Capital Master Fund, L.P., (iii) ValueAct Capital Management, LLC as General Partner of ValueAct Capital Management, L.P., (iv) ValueAct Holdings, L.P. as the sole owner of the limited partnership interests of ValueAct Capital Management, L.P. and the membership interests of ValueAct Capital Management, LLC and as the majority owner of the membership interests of VA Partners I, LLC and (v) ValueAct Holdings GP, LLC as General Partner of ValueAct Holdings, L.P. G. Mason Morfit is a member of the management board of ValueAct Holdings GP, LLC.
(3) The securities reported herein are directly beneficially owned by ValueAct Co-Invest Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) VA Partners I, LLC as General Partner of ValueAct Co-Invest Master Fund, L.P., (ii) ValueAct Capital Management, L.P. as the manager of ValueAct Co-Invest Master Fund, L.P., (iii) ValueAct Capital Management, LLC as General Partner of ValueAct Capital Management, L.P., (iv) ValueAct Holdings, L.P. as the sole owner of the limited partnership interests of ValueAct Capital Management, L.P. and the membership interests of ValueAct Capital Management, LLC and as the majority owner of the membership interests of VA Partners I, LLC and (v) ValueAct Holdings GP, LLC as General Partner of ValueAct Holdings, L.P. G. Mason Morfit is a member of the management board of ValueAct Holdings GP, LLC.
 
Remarks:
- The reporting persons herein may be deemed to be members of a "group" for purposes of the Securities Exchange Act of 1934, as amended. Each reporting person disclaims beneficial ownership of any securities deemed to be owned by the group that are not directly owned by such reporting person. This report shall not be deemed an admission that such reporting person is a member of a group or the beneficial owner of any securities not directly owned by such reporting person.

- G. Mason Morfit, a member of the management committee of ValueAct Holdings GP, LLC, serves on the board of directors of the Issuer. As a result, the other reporting persons herein may be deemed directors by deputization.

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