File hosting troubleshooting
• You can only host FileMaker files that are open on your computer.
• Use FileMaker Pro networking, not the operating system's networking. Don't access files via the Network Neighborhood or a Shortcut (Windows) or Go menu > Connect to Server or an Alias (OS X). Make sure the host computer is the first to open the file, then access it as a client. See information about using shared files as a client.