'npm install' extremely slow on Windows

For me is `npm install` extremely slow. I'm using Windows 8.1 with the latest npm version. My connection speed is around 100Mbit/s.

The project I'm trying to install has around 20 packages/dependencies and it takes around 30 Minutes to install all dependencies ...

Does anyone have a clue?

It seems like npm do not deal well with internet connections and can sometimes end in such situation.

**1)** I'll advice you to check if your firewall or antivirus is not performing any scan or filtering which may slow down npm install.

**2)** You may also use caching from npm like below.

npm install package-name --cache "c:\path\to\use\as\dependencies\cache"

this will allow npm download and cache dependencies in the directory you specified.

**3)** another solution for caching npm packages dependencies is **npm lazy**, you may find more information about this at [npm Lazy website][1]

**Note:** the caching process may or may not improve the download speed but it will probably save downloads time when installing or updating your npm packages.


[1]:

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I've been facing the same issue for a while. I was trying out the following

npm i typescript live-server --save-dev


The install would get stuck at it forever. However adding the -verbose flag worked just fine.

For me it appeared to be a problem with IPv6.

Disabling IPv6 helped immensely for me.
With IPv6 turned on "update-package newtonsoft.json" took 1:45 to time out with the error "update-package : A task was canceled."

With IPv6 disabled "update-package newtonsoft.json" completed in 10 seconds

I ran into the same problem, using `--verbose` as peterh mentioned showed me the source of the problem: I am behind a proxy, which uses its own certificates for https-connections.
According to user "Mletter1" on

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the issue is quite easily solved by using http:

npm config set registry

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--global

And voilà, it's fast again. Of course you should only do this, if you're ok with cleartext npm infos over the net ;-)

Turning off Windows Firewall and Windows Defender Real-time protection did it for me in Windows 10.

I know its just a **workaround**, but try using the build-in "[Windows PowerShell][1]"


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I faced the same issue while creating project while using angular cli "ng new PROJECT_NAME" this command triggers "npm -install" after creation of project, which took too long to install, and got stuck at "Installing packages for tooling via npm" . Follow these which worked for me

1) Check your npm version "npm --version" (must be higher than 2.1.8)Update your npm package by "npm -g install --save latest-version"

2) Remove the progress bar which consumes more time "npm set progress=false"

check this issues if still doesn't fix your problem

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Hopefully this sorts the problem Cheers!

I tried all the config's (proxy, registry, etc) nothing worked for me, so did a complete uninstall and install node & npm. Which helped to solve the issue.

Turning off the Windows Defender Firewall helped for me.

Because it just doesnt feel right I first added the WIFI to a Private Network (via WIFI settings) and only turned off the Windows Defender for a Private Network instead of all public Networks.

The next step should be: what network traffic causes this and how to add this to the Windows Defender exception rule :)