How to upgrade NPM to specific version 6.4.1 on windows?

On my windows 10 I have NPM 5.5.1 & Node 8.9.2 installed.

When I run the the command "npm i -g npm 6.4.1" I get bellow error. How to upgrade npm to 6.4.1 from 5.5.1 ?

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How can I update npm on Windows?

To update NPM, this worked for me: Navigate in your shell to your node installation directory, eg C:\Program Files (x86)\nodejs. run npm install npm (no -g option)

How do I install a specific version of Node in Windows?

To install a specific version of Node, you need to run nvm list available first so you can see the versions of Node that are available. To install that specific version, run nvm install node-version-number . For example, nvm install 14.20.0 .

Better you try like this