Four of Microsoft’s offices in Beijing, Shanghai, Guangzhou and Chengdu, China, were raided as part of an official government investigation. China cited computer security concerns and banned Windows 8 from being installed on government PCs. After China claimed Microsoft had backdoors in the OS to allow for U.S. government spying, Microsoft issued the following five statements: Microsoft has never provided any so-called Backdoor into its products or services. Yet in September 2013, The New York Times reported the NSA worked with Microsoft officials to get pre-encryption access to Microsofts most popular services, including Outlook e-mail, Skype Internet phone calls and chats, and SkyDrive,”]
Source: https://www.csoonline.com/article/2458706/about-those-alleged-backdoors-in-microsoft-products.html