A Microsoft Account is the current iteration of the tech giant’s single sign-in service. The company introduced the rebranded service in 2012 to coincide with the release of Windows 8. It allows users with an account to log into a wide range of services and apps using one single account, but its greatest strength arguably comes when used with Windows. While convenient, you might not want to use one for plenty of reasons. Here are some pros and cons of using a Microsoft Account.