This document summarizes the key terms of a software license agreement for Microsoft Windows 8.1 Single Language. It outlines that the agreement is between the user and either the computer manufacturer/installer or Microsoft, depending on how the software was obtained. The agreement allows the user to install the software on one computer for personal use and makes backups. It also describes the software activation process, data collection practices, and prohibited uses of the software. The agreement is governed by the laws of the user's state/country and includes a binding arbitration clause and class action waiver for disputes.