Open from URL

Online Help > Open from URL

Another possibility is to open mpp files that can be referred by an URL. All you need to do is to provide the URL to the project plan you want to access

Thus, in order to load and view mpp files from HTTP you need click on File>Open>URL and then in the Open URL window place the URL address to the project you want to open. After that, click the Open button to access the project file.