WMI Get All Monitors Not Returning All Monitors

Question

I am using WMI Win32_MonitorDesktop to get all the monitors information on the system.

However it only returns one. I have tried it on several computers

Answer 1

I tried to resolve this problem using WMI on many systems (from WinXP-SP3 up to Win10), and I got different results on different machines. There are two tables, where current monitor setting can be stored. First is Win32_DesktopMonitor in cimv2 namespace, second is WMIMonitorID in wmi namespace. If one of them has only one record (in multi display setting), then second will have all of entries.

Then to get driver name of monitor, one should find devices with PnPDeviceID found in records from those tables in Win32_PnPEntity table, in cimv2 namespace. You can check sample solution here.