Microsoft Executives to Make Significant Company Announcement

Details of the announcement will be provided during a press teleconference.
REDMOND, Wash., -- Feb. 21, 2008
Who: Steve Ballmer, chief executive officer of Microsoft Corp.; Ray
Ozzie, chief software architect; Bob Muglia, senior vice president
of the Server and Tools Business; and Brad Smith, senior vice
president and general counsel for Legal and Corporate Affairs.

Note: This announcement is not about Microsoft's proposed
acquisition of Yahoo! Inc. It will not be discussed during this
call.

When: 8:30 a.m. PST (17:30 CET) to 9:15 a.m. PST (18:15 CET), Thursday,
Feb. 21, 2008
Teleconference
Information: Listen-only news conference U.S. dial-in:
(888) 810-3138 (toll-free) or (630) 395-0279
(toll)
International dial-in: Please see below for a listing of
numbers
Verbal passcode: Microsoft

An executive Q&A session will directly follow the news
announcement, during which participants will have the
opportunity to submit questions.

Country or Region Toll Number Freephone/Toll-Free Number

Argentina 0800-777-0466
Australia Adelaide 61-8-8121-4872 1-800-098-380
Australia Brisbane 61-7-3102-0972 1-800-098-380
Australia Canberra 61-2-6100-1972 1-800-098-380
Australia Melbourne 61-3-9010-7743 1-800-098-380
Australia Perth 61-8-9467-5253 1-800-098-380
Australia Sydney 61-2-8211-1392 1-800-098-380
Austria 43-1-92-86-508 0800-677-286
Belgium 32-2-400-1325 0800-4-9718
Brazil 0800-8911991
Chile 1230-020-0323
China 10800-712-1296
China 10800-120-1296
Colombia 01800-9-156436
Czech Republic 420-2-25-98-56-56 800-700-224
Denmark 45-7014-0274 8088-5430
Finland 358-106-33-198 0-800-1-12828
France Lyon 33-4-26-69-12-89 080-510-0983
France Marseille 33-4-86-06-00-89 080-510-0983
France Paris 33-1-70-70-84-55 080-510-0983
Germany 49-69-2222-3467 0800-101-7055
Greece 30-69-2222-3467 08000-12-6809
Hong Kong 852-2286-5638 800-908-208
Hungary 06-800-17568
India 000-800-852-12
Indonesia 001-803-011-36
Ireland 353-1-247-5393 1800-932-053
Israel 972-02-3604-7039 1-80-9214710
Italy 39-02-3604-7039 800-906-460
Japan Osaka 81-6-7739-4773 0034-800-40065
Japan Tokyo 81-3-5539-5160 0034-800-40065
Luxembourg 352-27-000-1349
Malaysia 1-800-81-2060
Mexico 001-866-839-34
Netherlands 31-20-707-6857 0800-343-4364
New Zealand 64-9-970-4656 0800-441-333
Norway 47-21-59-00-47 800-11118
Panama 011-001-800-50
Poland 00-800-1211774
Portugal 8008-60134
Russia 8-10-8002-0074
Singapore 65-6883-9204 800-120-4247
Slovak Republic 421-2-322-422-29
South Africa 080-09-92283
South Korea 82-2-6744-1058 00798-14800-66
Spain 34-91-414-00-91 800-099-387
Sweden 46-8-505-98-263 0200-893-409
Switzerland 41-44-580-3896 0800-001-214
Taiwan 886-2-2795-7354 00801-137-661
Thailand 001-800-1206-6
United KingdomBirmingham 44-121-210-9029 0800-279-9630
United KingdomGlasgow 44-141-202-3229 0800-279-9630
United KingdomLeeds 44-113-301-2129 0800-279-9630
United KingdomLondon 44-20-7108-6390 0800-279-9630
United Kingdom Manchester 44-161-601-1429 0800-279-9630
Uruguay 000-413-598-34
Venezuela 0800-1-00-3211

Transcript: A written transcript of the news conference will be
available on the PressPass Web site two hours after the
conference call has ended.

Audio Replay
Information: An audio replay of the news conference will be available
approximately one hour after the conference call has ended,
and will be available online for 30 days. To access the audio
replay, please use the following:

U.S. dial-in: (800) 945-2760
International dial-in: +1 (402) 220-3538

For more information, press only:
Rapid Response Team, Waggener Edstrom Worldwide, (503) 443-7070,
rrt@waggeneredstrom.com
Note to editors: If you are interested in viewing additional information
on Microsoft, please visit the Microsoft Web page at
http://www.microsoft.com/presspass on Microsoft's corporate information pages.
Web links, telephone numbers and titles were correct at time of publication,
but may since have changed. For additional assistance, journalists and
analysts may contact Microsoft's Rapid Response Team or other appropriate
contacts listed at http://www.microsoft.com/presspass/contactpr.mspx.
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SOURCE Microsoft Corp.