/opt/phoenix/bin/omic -s /opt/phoenix/config/smb.conf -U DOMAIN/USER%PASSWORD //<HOST_IP> 'SELECT * FROM Win32_OperatingSystem'
The OMI (Open Management Infrastructure) protocol provides a standards-based management interface that, among other things, enables Linux-based management systems to interact with Windows hosts through the WS-Management (WS-Man) protocol. When a management application—such as a security information and event management (SIEM) platform—issues a request for basic operating system information and receives the reply "failed (Win32_OperatingSystem results not found via OMI)", it indicates that the Windows target cannot successfully respond to a fundamental system inventory query.
If the repository is confirmed as inconsistent or classes are missing: FortiSIEM AIO - Collector questions and WMI/OMI issues
Ensure your service account has , Enable Account , and Remote Enable checked. win32-operatingsystem result not found via omi
On 64-bit Windows, some WMI providers are only registered in the 64-bit WMI repository. If OMI is running as a 32-bit process (rare, but possible with older builds), it may not see the provider.
The most definitive way to test if OMI can successfully retrieve Win32_OperatingSystem data is to run a test query directly from the OMI client's command line. This isolates the problem to the connection itself, away from any larger monitoring platform.
to verify if the WMI class is responding locally on your Windows server? FortiSIEM AIO - Collector questions and WMI/OMI issues /opt/phoenix/bin/omic -s /opt/phoenix/config/smb
The underlying Windows Management Instrumentation repository on the target machine has become unstable, out of sync, or physically corrupted.
The error message typically occurs when a monitoring tool or collector (such as FortiSIEM ) attempts to query a Windows host using the Open Management Infrastructure (OMI) protocol but cannot retrieve the requested system information. Common Causes
: The message is packaged via WS-Management ( WS-Man ) protocols, typically using WinRM over HTTPS or HTTP. On 64-bit Windows, some WMI providers are only
To prevent this issue from reoccurring across your fleet, ensure that Windows updates are applied consistently—as patches frequently resolve background stability bugs in winmgmt —and ensure that your infrastructure automation playbooks connect using dedicated service accounts pre-configured with explicit remote management permissions.
The error message is a frequent pain point for administrators managing Linux, Unix, or mixed-OS environments using Open Management Infrastructure (OMI).
Now, focus on the target Windows server:
Because WMI queries are performed against a repository of class definitions stored in %windir%\System32\wbem\Repository , the absence of this class typically signals a deeper problem: the cimwin32 provider—which defines nearly all standard Win32_* classes including Win32_OperatingSystem , Win32_ComputerSystem , Win32_LogicalDisk , and Win32_Service —is missing, unregistered, or corrupted.
If the issue persists, a more aggressive manual rebuild may be necessary. From an elevated command prompt: