Npm install angular/cli error EPERM Operation not permitted - node.js

Question

4399 error Error: EPERM: operation not permitted, unlink
'C:\Users\deven\AppData\Roaming\npm\node_modules.staging\tmp-5fcc012e\README.md'
4399 error { Error: EPERM: operation not permitted, unlink
'C:\Users\deven\AppData\Roaming\npm\node_modules.staging\tmp-5fcc012e\README.md'
4399 error cause: 4399 error { Error: EPERM: operation not
permitted, unlink
'C:\Users\deven\AppData\Roaming\npm\node_modules.staging\tmp-5fcc012e\README.md'
4399 error errno: -4048, 4399 error code: 'EPERM', 4399
error syscall: 'unlink', 4399 error path:
'C:\Users\deven\AppData\Roaming\npm\node_modules\.staging\tmp-5fcc012e\README.md'
}, 4399 error stack: 'Error: EPERM: operation not permitted, unlink
\'C:\Users\deven\AppData\Roaming\npm\node_modules\.staging\tmp-5fcc012e\README.md\'',
4399 error errno: -4048, 4399 error code: 'EPERM', 4399 error
syscall: 'unlink', 4399 error path:
'C:\Users\deven\AppData\Roaming\npm\node_modules\.staging\tmp-5fcc012e\README.md',
4399 error parent: '#angular/cli' } 4400 error The operation was
rejected by your operating system. 4400 error It's possible that the
file was already in use (by a text editor or antivirus), 4400 error or
that you lack permissions to access it. 4400 error 4400 error If you
believe this might be a permissions issue, please double-check the
4400 error permissions of the file and its containing directories, or
try running 4400 error the command again as root/Administrator (though
this is not recommended). 4401 verbose exit [ -4048, true ]

Answer 1

Since you're using Windows, you have to launch the terminal as administrator and retry should work.

Answer 2

It seems like this is a problem with npm. Try deleting your node_modules folder and running npm install again. This should fix the problem.

Answer 3

It may be possible that your package.json is open in some editor. Close it and then run the npm command again.

Answer 4

Try to uninstall the CLI using:
npm uninstall -g #angular/cli
and reinstall using:
npm install -g #angular/cli
and also try to update npm to latest version
npm cache clean --force
npm install -g npm#latest

Answer 5

It solved for me when I made this: Right-click on -What ever program I use- and select Run as Administrator.
Personally I made it on PowerShell, but I assume that it works this way on any program

Answer 6

Launch your code editor (eg.. Visual Studio Code) as Administrator.
npm install -g #vue/cli.
vue create yourprojectname.

Answer 7

Please try following steps:
Delete node_modules
Do npm cache clean --force
Restart the PC
Try again npm install, now modules will install without any issues
(optional) - If you are behind VPN and not using any private registry , exit VPN and do npm install after restarting pc

Answer 8

I had opened the project in multiple terminals. Later after closing all the respective terminals and running 'npm i', things started to work well.