You can write values only to counters that reside on the local computer. However, you can read counter values from any computer in the enterprise for which you have access privileges.
When you set the MachineName property to point to a remote computer, the PerformanceCounter instance attempts to open the counter on that computer. If the counter does not exist, setting this property throws an exception.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)