Why powershell does not run Angular commands?

Step 1

First, you have to need to open the command prompt and run this command.

set-ExecutionPolicy RemoteSigned -Scope CurrentUser

Step 2

Now you have to run the second command on your system. This command is:

Get-ExecutionPolicy

Step 3

To view their policy, you need to run this command in your command prompt:

Get-ExecutionPolicy -list

https://www.c-sharpcorner.com/article/how-to-fix-ps1-can-not-be-loaded-because-running-scripts-is-disabled-on-this-sys/

script1.ps1 cannot be loaded because running scripts is disabled on this system. For more information, see about_Execution_Policies at http://go.microsoft.com/fwlink/?LinkID=135170

This error happens due to a security measure which won't let scripts be executed on your system without you having approved of it. You can do so by opening up a powershell with administrative rights (search for powershell in the main menu and select Run as administrator from the context menu) and entering:

set-executionpolicy remotesigned

I solved my problem by running below command

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

Remove ng.ps1 from the directory C:\Users\%username%\AppData\Roaming\npm\ then try clearing the npm cache at C:\Users\%username%\AppData\Roaming\npm-cache\