Zend certified PHP/Magento developer

How do I know what element is missing when I get “Element not found” error in netsh?

When I run netsh int ipv4 delete excludedportrange protocol=tcp startport=61600 numberofports=100 in Windows Command Prompt (as administrator) I get:

enter image description here

That response is unhelpful. Wondering if someone else can shed light on it.