Example for Debian/Ubuntu:

: Try switching from NTLM to Kerberos authentication. Users often find that NTLM fails to return results even when credentials are correct.

From the OMI client, check the target system type:

Before you start rebuilding repositories, check these common culprits: Authentication Snags : If you're using NTLM, try switching to Kerberos-auth . NTLM is notorious for causing cryptic OMI failures. Port Permissions

# Stop WMI service net stop winmgmt /y