"Check Connection" and "Test System" fails on Windows asset with "Unable to log in to the asset using service account service_account." error.
The event task displays the following error "Unauthorized access, access denied Exception by HRESULT: 0x80070005 (E_ACCESSDENIED)".
The service account has been denied access by the target system.
5/ For workgroup machines, ensure the security policy Computer Configuration | Windows Settings | Security Settings | Local Policies | Security Options | "Network access: Sharing and security model for local accounts" is set to "Classical - local users authenticate as themselves"