Why powershell does not run Angular commands?

Question

I have started to learn Angular but I note that powershell in Windows gives me an error whenever I make an angular command like:

ng new new-app

or

ng serve

this is the error what I got:

ng : File C:\Users\< username >\AppData\Roaming\npm\ng.ps1 cannot be loaded because 
running scripts is disabled on this system. For more information, see 
about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.
At line:1 char:1
+ ng serve
+ ~~
    + CategoryInfo          : SecurityError: (:) [], PSSecurityException
    + FullyQualifiedErrorId : UnauthorizedAccess

P.S. I try these commands in cmd and it works.

Can you run `Get-ExecutionPolicy` and provide the output? Additionally can you run to `C:\Users\< username >\AppData\Roaming\npm` and open the properties for `ng.ps1`, to see if there is a tick box which states "blocked", if so untick this. — Jacob, Sep 21 '19 at 00:31
I think the best way is removing ng.ps1 when I did everything has worked again — Amir Makram, Sep 21 '19 at 11:32
@TheFabio Actually May I will never know, after deleting ng.ps1 everything was going in perfect way. — Amir Makram, Nov 05 '19 at 18:04

score 516 · Accepted Answer · edited Feb 11 '20 at 23:31

516

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\

edited Feb 11 '20 at 23:31

ErraticFox

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answered Sep 21 '19 at 22:23

Amir Makram

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FYI clearing the cache was not necessary for me. – Edwin Lambregts Nov 01 '19 at 13:59
2

This is SPOT-ON! – doncadavona Nov 14 '19 at 15:38
3

Great, but why? Is it left over from a previous Angular installation and no longer being called correctly? Why does it no longer work? – Patrick Nov 20 '19 at 04:55
2

Actually, I don't know. I don't even found any mention for this file anywhere so I thought that file really not necessary, so I just delete it – Amir Makram Nov 20 '19 at 13:22
4

worked without clearing the cashe – amal50 Nov 24 '19 at 16:04
I have the "ng.ps1" (and "ng.cmd" and "ng", and "node_modules" folder) in C:\Users\[username]\AppData\Roaming\npm folder. They were (re)created 2 days ago when I run ng update (I checked the modified date). After that update (current 8.3.21, previous: 8.3.xx) the ng stop to work with Powershell. Deleting it (renamed) solved the problem. No cache cleaning is needed but in VS Code you need to kill and reopen the Terminal. Maybe Angular introduced the "ng" command directly as a powershell script-let but that resulted in this common permission problem ?! – Alex 75 Dec 23 '19 at 00:24
Also works for me without clearing cache – mgrotheer Jan 23 '20 at 18:21
works like a charm – OOD Waterball Mar 13 '20 at 05:18
You don't need to do this - see the answer below https://stackoverflow.com/a/58710158/834431 – Chris Apr 01 '20 at 12:06
This was spot on for me too. I also did not have to clear cache. Although I just now installed @angular/cli before running the command to follow a book I am reading. – Sam Apr 05 '20 at 12:01
Worked without needing to clear the npm cache. – Kamran May 06 '20 at 05:20
If you have ERROR 'More than one module matches. Use skip-import option to skip importing the component into the closest module.', please use `ng g c new-component --module app` Good Luck – Mojtaba Nava Jul 11 '20 at 08:54
Worked fine without clearing the cache, thanks! – janv Aug 31 '20 at 16:25
Just clearing the cache worked for me lol. – Tarik Ćosović Dec 06 '20 at 21:21

score 368 · Answer 2 · answered Nov 05 '19 at 11:13

368

I solved my problem by running below command

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

answered Nov 05 '19 at 11:13

Stanley Mohlala

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This is working for me , thanks – GvSharma Jan 28 '20 at 09:46
for more infor ... http://go.microsoft.com/fwlink/?LinkID=135170 – ahmednabil88 Feb 11 '20 at 19:05
4

This should be the correct answer for new installs. – Chris Apr 01 '20 at 12:06
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This seems to be right but quite unreliable. – Yogurtu Jun 03 '20 at 04:33
Great idea, It worked me – Gowthaman D Jun 08 '20 at 05:05
after this comment i enter 'a' to apply to All Policies. Thank You! – Meysam Bagheri Jun 22 '20 at 18:43
Solved my problem. This should be the accepted answer. – Ram Jun 30 '20 at 05:49
This should be the accepted answer. – tpartee Jul 03 '20 at 20:47
this code is work for me, thanks – Andy Luis Jul 25 '20 at 04:02
I have executed the same in my machine. It worked.Thanks a lot for sharing this. – Antony Sampath Kumar Reddy Aug 08 '20 at 10:42
This fails in some enterprise environments where we are unable to set these perms. – Adam Hughes Sep 03 '20 at 14:23
This worked for me but the accepted answer did not! – Sachin Prabhu Sep 23 '20 at 12:53
worked like a charm! – Xerri Oct 02 '20 at 05:42
Game changer :), thnks bro – Nenad Štrbić Oct 06 '20 at 16:07
Good answer :) :) – El7or Dec 05 '20 at 13:05
This worked for me as well. Great answer – Buddha Feb 02 '21 at 08:06
Thanks, that work ;) – Jéssica Machado Feb 11 '21 at 15:24
It works for me! Thanks ;) – Carlos Moya Mar 01 '21 at 21:19
This easily worked, Thank you! – Sujeewa K. Abeysinghe Apr 29 '21 at 02:49
this is the best solution thanks – MicroLova Apr 29 '21 at 19:12
This worked for me – John May 12 '21 at 07:21

score 34 · Answer 3 · edited Oct 22 '19 at 11:09

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

score -1 · Answer 4 · answered Nov 04 '19 at 06:56

-1

open windows powershell, run as administrater and SetExecution policy as Unrestricted then it will work.

answered Nov 04 '19 at 06:56

Palla Vishal

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Welcome to SO, complete your answer by providing the commands that do the works – Saeed Zhiany Nov 04 '19 at 07:23

Why powershell does not run Angular commands?

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