How To Handle `Error: EACCES: permission denied`

The Occurrence

I'll be coding away, testing something, refactoring another or trying to figure out things on a dev server. I'll finish, then when I come back some time later and try to run a dev server and I am met with this error:

listen EACCES: permission denied 0.0.0.0:3000

This is on Windows

What Causes It?

I am actually stumped myself as:

1. I have no clue what causes it and
2. I don't know how to trigger it.

Most of the explanations point to something to do with Docker, but I do not have Docker installed. It must be something else that I can't seem to pinpoint.

The Solution

The best solution I have found to resolve this error is as follows:

• Open PowerShell as Admin and stop winnat with the command below:

net stop winnat

• Start winnat again with the command below:

  net start winnat

I have encountered this error enough times that I know the exact search term to find this solution. So rather than Googling the same thing over and over, I'll keep it here for quick access.

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Might you know exactly what triggers it and how to avoid it in future? I would be very grateful for any explanation that makes sense.

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My Suspicions

I got this error when I started the dev server with vs code's integrated terminal.

Recently as I have been defaulting to cmder, I haven't been getting it at all.

Might it be that vs code doesn't recognise that you have killed a server and started a new one? Who knows....

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Comments

[gilachus]

Arigatou