Item 8.01 Other Events

Attached as Exhibit 100 to this report are the following materials from Microsoft Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30, 2007, filed on October 25, 2007, formatted in XBRL (Extensible Business Reporting Language): (i) the information contained in Item 1
(a)-(e) and Items 2-4 of Part I - Financial Information, and (ii) the information contained in Items 1, 1A, and 2 of Part II - Other Information. Users of this data are advised pursuant to Rule 401 of Regulation S-T that the financial information contained in the XBRL documents is unaudited and these are not the official publicly filed financial statements of Microsoft Corporation. The purpose of submitting these XBRL formatted documents is to test the related format and technology and, as a result, investors should continue to rely on the official filed version of the furnished documents and not rely on this information in making investment decisions.

In accordance with Rule 402 of Regulation S-T, the information in this Current Report on Form 8-K, including Exhibit 100, shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

100 The following materials from Microsoft Corporation's Quarterly Report on Form 10-Q for the quarter ended September 30, 2007, filed on October 25, 2007, formatted in XBRL (Extensible Business Reporting Language): (i) the information contained in Item 1 (a)-(e) and Items 2-4 of Part I - Financial Information, and (ii) the information contained in Items 1, 1A, and 2 of Part II - Other Information.

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