Angular-CLI ng new: “Error: EPERM: operation not permitted…”

Question

I am trying to use Angular-CLI to install a new Angular2 app, but keep running into the following issue:

ng new payment-calc-app

After \"Install

Answer 1

i figured out that this could be due to various reasons, one could be node versions. but mostly and even in my case as @maury844 pointed out, it was due to ng serve running in another command prompt in parallel. deleting npm and npm-cache folders in appdata/roaming could also be related to this issue. try all these.