Win32operatingsystem Result Not Found Via Omi New [portable] May 2026

The error "Win32_OperatingSystem results not found via OMI" typically occurs during automated discovery or credential testing (notably in FortiSIEM or similar monitoring collectors) when the Open Management Infrastructure (OMI) client cannot successfully query the Windows Management Instrumentation (WMI) service on a target Windows host. Primary Causes & Solutions 1. Authentication and Credential Failures

Authentication issues are a frequent culprit. If the user credentials cannot be validated, OMI cannot retrieve class data.

Switch Authentication Type: Users have found that switching from NTLM-auth to Kerberos-auth in the OMI configuration can resolve persistent connection issues.

Permissions: Ensure the user account is a member of the local Administrators' Group on the target host or the Domain Admins group. Remote access rights must also be explicitly granted for WMI and COM. 2. Network and Port Configuration win32operatingsystem result not found via omi new

OMI requires specific ports to be open for communication between the collector and the Windows host.

Required Ports: Verify that TCP/135, UDP/137, and TCP/5985-5986 (WinRM/WS-Man) are open in any firewalls between the systems.

Firewall Exception: You can enable remote administration on the target host via command line:netsh firewall set service RemoteAdmin enable. 3. WMI Service Corruption on Target The error "Win32_OperatingSystem results not found via OMI"

If the underlying WMI service on the Windows machine is frozen or its repository is corrupt, queries will return "not found" even if credentials are correct.

Restart WMI: Access the target's services (services.msc) and restart the Windows Management Instrumentation service.

Repository Repair: If the error persists, the WMI repository might need a rebuild. Check its status by running wmimgmt.msc, right-clicking WMI Control (Local), and selecting Properties. What is Win32_OperatingSystem

Re-register DLLs and MOFs: In an elevated CMD prompt, run these commands to re-register WMI components:

net stop winmgmt cd /d %windir%\system32\wbem for /f %s in ('dir /b /s *.dll') do regsvr32 /s %s net start winmgmt for /f %s in ('dir /s /b *.mof *.mfl') do mofcomp %s ```. Use code with caution. Copied to clipboard Troubleshooting Command

To verify if OMI can communicate independently of your monitoring software, use the omic tool directly from your collector’s CLI:/opt/phoenix/bin/omic -U DOMAIN/USER%PASSWORD // 'SELECT * FROM Win32_OperatingSystem'. FortiSIEM AIO - Collector questions and WMI/OMI issues

3. Diagnostic Steps

2. Use OMI’s exec to Run a WMI Query

Instead of omi new, use the underlying WQL interface:

omicli exec root/cimv2 "SELECT * FROM Win32_OperatingSystem"

What is Win32_OperatingSystem?

Win32_OperatingSystem is a core WMI (Windows Management Instrumentation) class that provides detailed information about the installed operating system, including version, last boot time, serial number, total memory, and more. Any management tool that gathers OS inventory typically queries this class.