Microsoft Corporation

MICROSOFT CORPORATION

Offers to exchange Existing Notes (as defined below) and a cash payment (as described below) for up to $6,250,000,000 in Aggregate Principal Amount of New 2052 Notes (as defined below) and up to $1,250,000,000 in Aggregate Principal Amount of New 2062 Notes (as defined below) and cash payment (as described below), as applicable.

To receive the exchange offer documents, please complete the Holder Identification Form below.

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Pool 1 Notes

CUSIP Number Title of Security Principal Amount Outstanding

594918BC7 3.500% Notes due 2035

594918BK9 4.200% Notes due 2035

594918BS2 3.450% Notes due 2036

594918BZ6 4.100% Notes due 2037

594918AD6 5.200% Notes due 2039

594918AJ3 4.500% Notes due 2040

594918AM6 5.300% Notes due 2041

594918AR5 3.500% Notes due 2042

594918AU8 3.750% Notes due 2043

594918AX2 4.875% Notes due 2043

594918BD5 3.750% Notes due 2045

594918BL7 4.450% Notes due 2045

594918BT0 3.700% Notes due 2046

594918CA0 4.250% Notes due 2047

Pool 2 Notes

CUSIP Number Title of Security Principal Amount Outstanding

594918BE3 4.000% Notes due 2055

594918BM5 4.750% Notes due 2055

594918BU73 3.950% Notes due 2056

594918CB8 4.500% Notes due 2057

The Exchange Offers will expire at 11:59 p.m., New York City time, on March 15, 2021, unless extended by us (such date and time, as they may be extended, the �Expiration Time�). To be eligible to receive the Early Exchange Premium, holders must validly tender their Existing Notes at or prior to 5:00 p.m., New York City time, on March 15, 2021 (such date and time, the �Early Exchange Time�). Tenders of Existing Notes in the Exchange Offers may be validly withdrawn at any time at or prior to the Expiration Time, but will thereafter be irrevocable, except in certain limited circumstances where additional withdrawal rights are required by law.