Blocked file types
You can upload most file types to Microsoft Office Live Workspace beta, including Microsoft Office documents, images, and file types created by software from companies other than Microsoft Corporation.
To protect users, however, Office Live Workspace blocks files with file name extensions that could act as executable files. For example, a file with the .exe file name extension could potentially contain code that runs on demand when it is uploaded to the Office Live Workspace site. As a result, Office Live Workspace prevents users from uploading files with the .exe extension.
The following table lists the file name extensions that may act as executable files, which are blocked by Office Live Workspace: