Steps to reproduce:

1. Create WMI item (type "int") : wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]
2. Install Zabbix Agent2 on any (tested @ 2008R2-2016) Windows host
3. Wait for data gathering or force it manually
4. Locate it as "unsupported" because "Empty WMI search result"

Result: (debug logging level 4)

received passive check request: 'wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]' from '172.16.1.2'
[1] processing update request (1 requests)
[1] adding new request for key: 'wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]'
[1] created direct exporter task for plugin 'Wmi' itemid:0 key 'wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]'
executing direct exporter task for key 'wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]'
failed to execute direct exporter task for key 'wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]' error: 'Empty WMI search result.'
sending passive check response: ZBX_NOTSUPPORTED: 'Empty WMI search result.' to '172.16.1.2'

Expected:

Windows Agent 4.4.5 log file:

Requested [wmi.get[root\cimv2,Select LicenseStatus From SoftwareLicensingProduct where ProductkeyID IS NOT NULL and Name like "Windows%"]]
.....
Sending back [1]