Windows Tools

Netdiag.exe: Network Connectivity Tester

Overview | Notes | Syntax | Examples | Related Tools Open Command Prompt

This command-line diagnostic tool helps to isolate networking and connectivity problems, by performing a series of tests to determine the state of your network client, and whether it is functional. These tests, and the key network status information they expose, give network administrators and support personnel a more direct means of identifying and isolating network problems. Moreover, because this tool does not require that parameters or switches be specified, support personnel and network administrators can focus on analyzing the output, rather than on training users how to use the tool.


Corresponding UI

There is no corresponding user interface for NetDiag.


The TCP/IP protocol stack is the primary communications protocol used in networks today. In order to access the Internet, you need to be using TCP/IP.

System Requirements

The following are the system requirements for NetDiag:

Files Required