When I try to restart services like “FTP Publishing” and “World Wide Web Publishing”, it keeps on pop up this annoying message, “could not start the world wide web publishing service on local computer error 1717: the interface is unknown”
Finally, I realized that this is due to Event Log has been disabled. Once I changed it back to “Automatic” and started it, I can start back “FTP Publishing” service and “World Wide Web Publishing” service now.