Title: Microsoft
Content:  The corporate headquarters, informally known as the Microsoft Redmond campus, is located at One Microsoft Way in Redmond, Washington. Microsoft initially moved onto the grounds of the campus on February 26, 1986, weeks before the company went public on March 13. The headquarters has since experienced multiple expansions since its establishment. It is estimated to encompass over 8 million ft2 (750,000 m2) of office space and 30,000–40,000 employees. Additional offices are located in Bellevue and Issaquah, Washington (90,000 employees worldwide). The company is planning to upgrade its Mountain View, California, campus on a grand scale. The company has occupied this campus since 1981. In 2016, the company bought the 32 acre campus, with plans to renovate and expand it by 25%. Microsoft operates an East Coast headquarters in Charlotte, North Carolina.
Title: Microsoft Redmond campus
Content:  The Microsoft campus is the corporate headquarters of Microsoft, located in Redmond, Washington, United States, a part of the Seattle metropolitan area. Microsoft initially moved onto the grounds of the campus on February 26, 1986, shortly before going public on March 13. The headquarters has undergone multiple expansions since its establishment and is presently estimated to encompass over 8 e6sqft of office space and have over 50,000 employees. Additional offices in the Eastside suburbs of Seattle are located in Bellevue and Issaquah. Building 92 on the campus contains a visitor center (with interactive exhibits) and store that are open to the public.
Title: HITEC City
Content:  Microsoft India Development Center is one of Microsoft's largest R&D centers outside the Redmond headquarters, Washington state. Set up in Hyderabad in 1998. Then Chief minister N. Chandrababu Naidu arranged a meeting with Bill Gates founder of Microsoft and discussed about the infrastructure provided and human resources availability in the state while managed him to build their sprawling 54 acres Microsoft campus of LEED Gold Certification for one of its buildings in hyderabad. The Microsoft Corporation is the first multinational company to build a research and development center in Cyberabad.
Title: History of Microsoft
Content:  Ireland became home to one of Microsoft's international production facilities in 1985, and on November 20 Microsoft released its first retail version of Microsoft Windows (Windows 1.0), originally a graphical extension for its MS-DOS operating system. In August, Microsoft and IBM partnered in the development of a different operating system called OS/2. OS/2 was marketed in connection with a new hardware design proprietary to IBM, the PS/2. On February 16, 1986, Microsoft relocated their headquarters to a corporate office campus in Redmond, Washington. Around one month later, on March 13, the company went public with an IPO, raising US$61 million at US$21.00 per share. By 
Title: Microsoft Redmond campus
Content:  Microsoft chose to move its headquarters from Bellevue to nearby Redmond in January 1985, selecting a 29 acre plot of land that would be developed by Wright Runstad & Company. Construction began on August 9, and Microsoft moved into the $25 million facility on February 26, 1986, several weeks before the company's initial public offering. The move generated some concerns about increased traffic congestion on the unfinished State Route 520 freeway between Bellevue and Redmond; a new freeway interchange at Northeast 40th Street would later be built in 2000 to service the campus, after lobbying and partial funding from Microsoft. The initial campus was situated on a 30 acre lot with six buildings and was able to accommodate 800 employees, growing to 1,400 by 1988. The site was once home to chicken 
Title: History of Seattle (1940–present)
Content:  Bill Gates and Paul Allen, founders of Microsoft Corporation, attended the Lakeside School, a private middle and high school in Haller Lake, at the northern Seattle city limits. This turned out to have rather dramatic consequences for the entire Seattle area. Microsoft's first product, Microsoft BASIC, came out in 1976. The company was incorporated in New Mexico the same year. By 1978 sales exceeded one million dollars a year. In 1979, Microsoft moved its offices back to Redmond from Albuquerque, New Mexico—they had gone to New Mexico to be near a client who no longer dominated their business, Gates and Allen wanted to go back where they were from, and it was easier to entice 
Title: Microsoft India
Content:  Microsoft India Private Limited is a subsidiary of American software company Microsoft Corporation, headquartered in Hyderabad, India. The company first entered the Indian market in 1990 and has since worked closely with the Indian government, the IT industry, academia and the local developer community to usher in some of the early successes in the IT market. Microsoft currently has offices in the 11 cities of Ahmedabad, Bangalore, Chennai, Hyderabad, Kochi, Kolkata, Mumbai, the NCR (New Delhi, Noida and Gurgaon) and Pune. Microsoft in India employs about 8,000 people and has six business units representing the complete Microsoft product portfolio.
Title: Microsoft
Content:   On October 26, 2015, the company opened its retail location on Fifth Avenue in New York City. The location features a five-story glass storefront and is 22,270 square feet. As per company executives, Microsoft had been on the lookout for a flagship location since 2009. The company's retail locations are part of a greater strategy to help build a connection with its consumers. The opening of the store coincided with the launch of the Surface Book and Surface Pro 4. On November 12, 2015, Microsoft opened a second flagship store, located in Sydney's Pitt Street Mall.
Title: Microsoft Mobile
Content:  Microsoft Mobile's head office was Microsoft Talo in Keilaniemi, Espoo, Finland. The building was previously named Nokia House, and was part of Microsoft's acquisition of Nokia's device business, becoming Microsoft Mobile's headquarters in April 2014 and receiving its new name. It is now occupied by both Microsoft Finland and Tieto.
Title: Microsoft India
Content:  Located in Hyderabad, the Microsoft India Development Center (MSIDC) is Microsoft’s largest software development center outside of their headquarters in Redmond, Washington. The MSIDC teams focus on strategic and IP sensitive software product development.

Question: where was the first microsoft headquarters located?
Answer: Redmond.