(Console Window Host) is a core Windows system process that serves as the bridge between command-line programs and the Windows graphical interface. What is it?
It is normal to see of conhost.exe at once—one for every active console-based process.
Introduced with Windows 7, conhost.exe was designed to fix a major security and design flaw in earlier versions of Windows. Previously, the ( csrss.exe ) handled command-line windows. However, csrss.exe ran under the highly privileged System account, making any bug or exploit in a console window a major security risk.