Windows Network Troubleshooting Tools
Download nowWindows includes a full set of network diagnostic tools without installing anything extra. This guide walks through the built-in commands and utilities to check connectivity, find devices on your network, and diagnose Wi-Fi problems.
Updated August 9, 2026 · PC Utility Hub Editorial Team
Start with built-in tools
Before reaching for third-party network utilities, Windows' own command-line and GUI tools handle most everyday troubleshooting: checking your own network configuration, testing connectivity to a site, tracing the path packets take, and inspecting Wi-Fi details.
ipconfig: check your own network configuration
Shows your IP address, subnet mask, default gateway, and DNS servers for each network adapter. Useful first step when troubleshooting 'no internet' issues.
- 1Open Command Prompt (search 'cmd' in Start).
- 2Run `ipconfig /all` to see full adapter details, or `ipconfig /flushdns` to clear a stale DNS cache.
- 3Run `ipconfig /release` then `ipconfig /renew` to request a new IP address from your router if the connection seems stuck.
ipconfig /allping and tracert: test connectivity
`ping` tests whether a remote address responds and how long it takes — useful for confirming whether an outage is local or beyond your network. `tracert` shows every hop a connection takes to reach its destination, helpful for spotting where a connection is slowing down or failing.
ping 8.8.8.8
tracert google.comnetsh wlan: inspect Wi-Fi details
`netsh wlan` commands report your current Wi-Fi signal, connection speed, and saved network profiles — including recovering a saved Wi-Fi password with the `key=clear` option on a network you've already connected to.
netsh wlan show interfaces
netsh wlan show profiles
netsh wlan show profile name="YourNetwork" key=clearResource Monitor: see live network activity by app
- 1Press Windows key, type Resource Monitor, and open it.
- 2Go to the Network tab to see which processes are using bandwidth and which TCP connections are active.
- 3Use this to spot an app unexpectedly consuming your connection.
When a third-party tool adds value
Built-in tools don't provide an easy list of every device currently on your Wi-Fi network by friendly name — that's the specific gap NirSoft's Wireless Network Watcher fills, scanning your subnet and listing connected devices with IP/MAC/manufacturer info. It complements, rather than replaces, the commands above.
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Frequently asked questions
- What's the quickest way to check if my internet is down or just one site?
- Run `ping 8.8.8.8`. If that responds but a specific site doesn't, the issue is likely DNS or that site, not your connection.
- How do I find my saved Wi-Fi password in Windows?
- Run `netsh wlan show profile name="NetworkName" key=clear` in Command Prompt and look for the Key Content field.
- How can I see every device connected to my Wi-Fi?
- Check your router's admin page, or use a scanning utility like NirSoft's Wireless Network Watcher for a quick list from your PC.
- What does tracert actually show?
- Every network hop between your PC and the destination, with response time for each — useful for spotting where latency is introduced.
Related pages
- Wireless Network WatcherWhat NirSoft's Wireless Network Watcher shows, how to use it, and how it fits alongside built-in Windows network tools.
- Best Windows Utilities SoftwareCategory-by-category picks for Windows utility software: disk, system, file, network, recovery, and diagnostics.
- Process ExplorerAdvanced process, handle, and DLL viewer built by Sysinternals, distributed free by Microsoft.
- Disk CleanupThe classic Windows disk cleanup program, still available in Windows 10 and 11, for reclaiming drive space.