This does mean that an account at Microsoft Office Live Workspace is required before the add-in can be used. The service is free on the other hand and it takes only a few seconds to signup for it. Windows Live account users can use their account to signup for Microsoft Office Live Workspace. The service is currently in beta and provides access to 5 Gigabytes of storage space for Microsoft Word, Excel and PowerPoint documents that can also be edited on the website.

Office 2007 users find the option to upload their documents to the Microsoft Office Live Workspace and to open documents from the online storage space under the Microsoft Office button in Word, Excel and PowerPoint.

Office 2003 and XP users get a new Office Live toolbar that provides access to three buttons that offer the functionality to open documents that are stored at Microsoft Office Live Workspace, save documents so that they are stored online and to open the Office Live Workspace website.

The Office Live Add-in itself is compatible with Microsoft Office 2007, Office 2003 and Office XP.