How to completely remove node.js from Windows

How to remove Node.js from Windows:

0. Take a deep breath.

1. Run npm cache clean --force

2. Uninstall from Programs & Features with the uninstaller.

3. Reboot (or you probably can get away with killing all node-related processes from Task Manager).

4. Look for these folders and remove them (and their contents) if any still exist. Depending on the version you installed, UAC settings, and CPU architecture, these may or may not exist:

• C:\Program Files (x86)\Nodejs
• C:\Program Files\Nodejs
• C:\Users\{User}\AppData\Roaming\npm (or %appdata%\npm)
• C:\Users\{User}\AppData\Roaming\npm-cache (or %appdata%\npm-cache)
• C:\Users\{User}\.npmrc (and possibly check for that without the . prefix too)
• C:\Users\{User}\AppData\Local\Temp\npm-*

4. Check your %PATH% environment variable to ensure no references to Nodejs or npm exist.

5. If it's still not uninstalled, type where node at the command prompt and you'll see where it resides -- delete that (and probably the parent directory) too.

6. Reboot, for good measure.

Scenario: Removing NodeJS when Windows has no Program Entry for your Node installation

I ran into a problem where my version of NodeJS (0.10.26) could NOT be uninstalled nor removed, because Programs & Features in Windows 7 (aka Add/Remove Programs) had no record of my having installed NodeJS... so there was no option to remove it short of manually deleting registry keys and files.

Command to verify your NodeJS version: node --version

I attempted to install the newest recommended version of NodeJS, but it failed at the end of the installation process and rolled back. Multiple versions of NodeJS also failed, and the installer likewise rolled them back as well. I could not upgrade NodeJS from the command line as I did not have SUDO installed.

SOLUTION: After spending several hours troubleshooting the problem, including upgrading NPM, I decided to reinstall the EXACT version of NodeJS on my system, over the top of the existing installation.

That solution worked, and it reinstalled NodeJS without any errors. Better yet, it also added an official entry in Add/Remove Programs dialogue.

Now that Windows was aware of the forgotten NodeJS installation, I was able to uninstall my existing version of NodeJS completely. I then successfully installed the newest recommended release of NodeJS for the Windows platform (version 4.4.5 as of this writing) without a roll-back initiating.

It took me a while to reach sucess, so I am posting this in case it helps anyone else with a similar issue.