A family of Microsoft word processing software products for creating web, email, and print documents.
Assuming that this is the icon that you see
If you right click on the file and then on Properties, you will probably see something like
that will show you where the actual file is located, with the Size on disk: of 0 bytes indicating that the icon that you see is only a "shortcut" to the file. That you cannot open it indicates that you do not have access to the actual location of the file and that is probably because you are not signed into the remote service.