I have following alert on Windows server 2012R2.Please let me know if anyone have a solution.
Microsoft.Windows.Server.DiskState.vbs : The class name ‘Win32_OperatingSystem’ did not return any valid instances.  Please check to see if this is a valid WMI class name.. Invalid class


Log Name: Operations manager

Source: Health Service Script

Event ID: 4001

Vyper answered