Power your possibilities with Windows PCs for work, creativity, gaming, and AI. Explore powerful features, built-in security, and more ways to do what you love. Microsoft Corporation is an American multinational technology conglomerate headquartered in Redmond, Washington. The company became influential in the rise of personal computers through software like Windows and has since expanded into areas such as Internet services, cloud computing, artificial intelligence and video gaming among others. Sign in to check and manage your Microsoft account settings with the Account Checkup Wizard. Sign in to manage your Microsoft account and access free online services like Outlook, Word, Excel, and PowerPoint securely from any device. Contact Microsoft customer support The type of support Microsoft provides depends on the product you're calling about and if you have a product for home or for business use. It can also depend on if you want help for an issue with a service like OneDrive or Outlook.com, or help with Windows, but you don't have an existing Microsoft 365. Sign in to Outlook to access and manage your email efficiently. Get access to free online versions of Outlook, Word, Excel, and PowerPoint. Explore Microsoft products and services and support for your home or business. Shop Microsoft 365, Copilot, Teams, Xbox, Windows, Azure, Surface and more. Access and manage your Microsoft account, subscriptions, and settings all in one place. Microsoft 365 includes Word, Excel, PowerPoint, Outlook, Teams, and OneDrive, with Microsoft Copilot built in to help you create, communicate, and summarize information. Formerly Office 365.