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I'm new to typescript and was trying to work on it where in I came across this issue, where I saved a file using .ts extension and instead of recognizing the file as a typescript file,the system is recognizing it as a Transport Stream file. I have already installed all the typescript files using node. Whenever I try to compile the code the error displayed is as follows:

PS D:\WorkSpace\typescript> tsc basics.ts tsc : File C:\Users\mn\AppData\Roaming\npm\tsc.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

  • tsc basics.ts
  • + CategoryInfo          : SecurityError: (:) [], PSSecurityException
+ FullyQualifiedErrorId : UnauthorizedAccess

This is how the file appears in the folder:

Folder image

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4 Answers 4

Reset to default
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  1. Run the Windows PowerShell as RunAsAdministrator
  2. type Set-ExecutionPolicy Unrestricted
  3. exit and run compiler again
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Comments

5

For now, I suggest removing all .ps1 files from your npm bin folder.

Sometimes changing the execution policy is not a good practice. A more restricted Execution policy (RemoteSigned) helps users from unintentionally running malicious code.

The issue is still open in the npm/cli repository, labeled as 'Needs Discussion' Necessity of Powershell Script Support for Global Packages.

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For me, the tsc.ps1 it was in C:\Users\xxx\AppData\Roaming\npm
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  • CategoryInfo : SecurityError: (:) [], PSSecurityException
  • FullyQualifiedErrorId : UnauthorizedAccess

I got the same error in visual studio. But using command prompt it has been solved

Thank you

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0

I would suggest not changing the ExecutionPolicy, as it would open the door for any vendor to run scripts on your machine.

The file that is being run is: C:\Users%USERNAME%\AppData\Roaming\npm\tsc.ps1

Removing it, or renaming it will make the tsc command target C:\Users%USERNAME%\AppData\Roaming\npm\tsc.cmd instead.

This did the trick for me.

Answer found in: https://github.com/microsoft/TypeScript/issues/35606 by user sinaAtabaki

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