Setting the PowerShell Execution Policy

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Solution

There are situations when you are executing a PowerShell script and it will give you the below error message:

File C:\scripts\regSvr.ps1 cannot be loaded because the execution of scripts is disabled on this system. Please see "get- help about_signing" for more details.
At line:1 char:19
+ c:\scripts\regSvr.ps1 <<<<

The reason for the above error is a security setting built into Windows PowerShell called "execution policy". Execution Policy determines how (or if) PowerShell runs scripts. By default, PowerShell's execution policy is set to Restricted; this means that scripts will not run.


You can verify the execution policy setting by using the Get-ExecutionPolicy PowerShell command as shown below.

get-executionpolicy

PowerShell Console

You can change the PowerShell script execution behavior using "Set-ExecutionPolicy". The Set-ExecutionPolicy cmdlet enables you to determine which Windows PowerShell scripts will be allowed to run on your computer.

Windows PowerShell has four different execution policies:

  • Restricted - No scripts can be run. Windows PowerShell can be used only in interactive mode.
  • AllSigned - Only scripts signed by a trusted publisher can be run.
  • RemoteSigned - Downloaded scripts must be signed by a trusted publisher before they can be run.
  • Unrestricted - No restrictions; all scripts can be run.

To get more information on Set-ExecutionPolicy, type "Get-Help Set-ExecutionPolicy" as shown below.

get-help set-executionpolicy

getHelpSetExecutionPolicy PowerShell

To execute the Set-ExecutionPolicy command, you must have administrator permission and for Windows Vista / Windows Server 2008 and later versions you have to open the PowerShell command prompt with Run As Administrator. Otherwise you will get the below error.

set-executionpolicy unrestricted

PowerShell Access Denied Errors

You can set the execution policy as per your requirement as shown below.


set-executionpolicy unrestricted
get-executionpolicy

--or
set-executionpolicy remotesigned
get-executionpolicy

PowerShell Set-Execution Policy Example

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