| Cause | Description | |-------|-------------| | | Win32_OperatingSystem is case-sensitive in some contexts. | | OMI namespace mismatch | Default namespace is root/cimv2 ; other namespaces may not contain this class. | | Insufficient permissions | OMI user lacks WMI read access. | | Corrupted WMI repository | WMI class enumeration fails. | | OMI server not running | OMI service ( omiserver ) down or not installed on target. | | Firewall blocking DCOM/WinRM | OMI uses WinRM (HTTP/HTTPS) by default; blocked ports cause empty results. | | 64-bit vs 32-bit redirection | OMI might be running in 32-bit mode and cannot access 64-bit WMI classes. |
The error indicates that OMI’s internal class provider lookup failed. Possible reasons include: win32operatingsystem result not found via omi new
This article dissects the anatomy of this error, explores its root causes across different versions of OMI (including the infamous Microsoft fork used in Azure ARC and System Center), and provides a step-by-step roadmap to diagnose and fix the issue. | Cause | Description | |-------|-------------| | |
: Verify that the following ports are open between the collector and the host: TCP 135 (RPC/DCOM) TCP 5985 (HTTP WinRM) or 5986 (HTTPS WinRM) UDP 137 (NetBIOS) Verify with CLI | | Corrupted WMI repository | WMI class enumeration fails
To create a feature that addresses the issue of the Win32_OperatingSystem result not being found via omi new , let's break down the problem and the steps to potentially resolve or work around it.
Operating system information (Name, Version, etc.)
wmic os get caption
