EPERM: operation not permitted, lstat when running ng build

Question

I\'m getting an ERROR when trying to run ng build on my angular 4 app.

EPERM: operation not permitted, lstat \'\'
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Answer 1

I had the same problem.

As @Mauricio De La Quintana said, the problem is permission.

In my case (Windows environment), I solved the problem by removing the read-only property from the Repos folder and adding write permission to the Everyone user.

Answer 2

I think it is a permission problem, when you do ng build you also delete the previous files. I suggest using

sudo chown -R youruser /pathAngularApp

Answer 3

I saw this problem when running IISNODE...

Solution: Ensure that AppPool Identify from IIS has read permissions all the way from root of harddrive to website files.

Full answer is here https://github.com/tjanczuk/iisnode/issues/247

Answer 4

This has happened in my ASP.NET projects. For me this has happened for one of two reasons.

1. This can be a permission problem so you need to run Command Prompt as Admin.

   a. Press win to open the start menu. Type in cmd to search for Command Prompt.

   b. Press ctrl + shift + enter to launch Command Prompt as administrator.

2. This can happen when you build your web project in Visual Studio(or another IDE) and it is currently running.

   a. This is a simple fix click the stop debugging and then try 'ng build' again.

Answer 5

Error : Error: EPERM: operation not permitted, lstat 'C:\Users\Administrator'

We encountered this error after the Windows update.

This Solution worked for me;

1. Go to C:\Users\Administrator
2. Rename the file NTUSER.DAT as NTUSER-old.DAT

Answer 6

I had the same problem, and it was related to what @goku_da_master commented, I had the vueJs application running even when my VsCode stopped, I figured it out from the task manager and fixed it like this:

• I opened the task manager
• I searched if Node.js was running
• Right click on the Node.js process
• Finish Task
• "npm run dev" again