and other monitoring environments when trying to discover Windows hosts using Open Management Infrastructure (OMI)
If the verification command detects structural inconsistencies, force a rebuild of the schema allocations: winmgmt /salvagerepository Use code with caution. 3. Re-Register WMI DLLs and MOF Classes
The error generally stems from a communication gap between the CIM provider and the Windows Management Instrumentation (WMI) repository. Common causes include:
Common log snippet:
Troubleshooting "Win32_OperatingSystem Result not found via OMI" Errors in Enterprise Monitoring
Make sure your network firewalls allow traffic from your monitoring server to the Windows target on these specific ports: : Used for RPC communication. UDP Port 137 : Used for NetBIOS name queries. TCP Ports 5985 and 5986 : Used for WinRM (HTTP and HTTPS). Fix Account and Permission Issues
If this fails, the issue is likely network-related or credential-based rather than a FortiSIEM GUI bug. win32operatingsystem result not found via omi new
: Sometimes the WinRM service isn't listening on all interfaces. You can force this via GPO in your Domain Controller. 🔍 Deep Dive: Is WMI Actually Broken?
On the target Windows machine, go to Security > Windows Firewall > Change Settings and ensure the Windows Management Instrumentation (WMI) exception is enabled. 3. Repair a Corrupted WMI Repository
If this returns an instantaneous Access Denied error, the breakdown is due to . and other monitoring environments when trying to discover
: In an elevated CMD prompt, run these commands to re-register WMI components:
If the Get-WmiObject test fails locally or returns an "Invalid class" error, the WMI repository may be corrupted [4†L18-L22].
"Name": "Microsoft Windows Server 2019 Standard", "Version": "10.0.17763", "OSType": 18 Fix Account and Permission Issues If this fails,