Licensing

Office as a one-time purchase includes applications such as Word, Excel, and PowerPoint and Onenote for use on a single PC 

System Requirements
Computer and processor 1 gigahertz (GHz) or faster x86-bit or x64-bit processor with SSE2 instruction set
Memory 2 GB RAM
Hard disk 3.0 GB available disk space
Display 1280 x 800 screen resolution
Graphics Graphics hardware acceleration requires a DirectX 10 graphics card.
Operating system Windows 10, Windows 8.1, Windows 8, Windows 7 Service Pack 1, Windows 10 Server, Windows Server 2012 R2, Windows Server 2012, or Windows Server 2008 R2 For the best experience, use the latest version of any operating system.
Browser The current or immediately previous version of Internet Explorer, Safari, Chrome, Firefox, or Microsoft Edge.
.NET version .NET 3.5 required. Some features may require .NET 4.0 or 4.5 CLR to also be installed.
Other Internet functionality requires an Internet connection. Fees may apply.
A touch-enabled device is required to use any multi-touch functionality. But, all features and functionality are always available by using a keyboard, mouse, or other standard or accessible input device. Note that touch features are optimized for use with Windows 8, Windows 8.1 or Windows 10
Product functionality and graphics may vary based on your system configuration. Some features may require additional or advanced hardware or server connectivity.
Certain features require OneDrive.
Microsoft account