WMI connection through the Real-Time view can fail when you try to connect to a computer with Microsoft Windows XP Service Pack 2, Windows Vista, or Windows 7 operating system.
This issue can occur when the default configuration of the Windows Firewall program blocks incoming network traffic for Windows Management Instrumentation (WMI) connection. For the connection to succeed, the remote computer must permit incoming network traffic on TCP ports 135, 445, and additional dynamically-assigned ports, typically in the range of 1024 to 1034.
You can resolve this issue in one of the following ways:
Configure the firewall on the computer that you want to connect to.