There is something to be said for finding the problem and fixing it. And there is also something to be said for hitting it with a hammer until it works/fits.
I use this command in the latter category.
netsh is an amazing command that is a complete toolbox for the Windows networking stack covering most areas of functionality in numbing nuance. It is for this reason that when things go wrong, this is the command that will fix it or tell you what is going on.
That's all well and good, except you don't always have time and patience for finding the problem, and often, a quick fix is just what you need.
netsh int ip reset is a mostly safe reset of the whole network stack. I use it to fix connection problems with WiFi, DHCP lease problems, and VPN connections that refuse to connect. After a quick reboot, the issues are mostly fixed for me.
This magical command isn't going to fix any real problems like an unplugged cable for an internet issue; it's good for those times when things should be working and you can't see why. Use it like a hammer.
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