问题:

This question already has an answer here:

PowerShell says “execution of scripts is disabled on this system.” 21 answers

I run this code to execute power shell from an asp.net application:

System.Management.Automation.Runspaces.Runspace runspace = System.Management.Automation.Runspaces.RunspaceFactory.CreateRunspace(); runspace.Open(); System.Management.Automation.Runspaces.Pipeline pipeline = runspace.CreatePipeline(); pipeline.Commands.AddScript(@"\\servername\path");  pipeline.Commands.Add("Out-String");  Collection results = pipeline.Invoke();  runspace.Close();

But I am getting the error:

.ps1 cannot be loaded because the execution of scripts is disabled on this system. Please see "get-help about_signing" for more details.

The same code runs fine from a command prompt or a windows (winform) application.

回答1:

Your script is blocked from executing due to the execution policy.

You need to set it on the client PC to Unrestricted. You can do that by calling Invoke with

Set-ExecutionPolicy Unrestricted

回答2:

There are certain scenarios in which you can follow the steps suggested in the other answers, verify that Execution Policy is set correctly, and still have your scripts fail. If this happens to you, you are probably on a 64-bit machine with both 32-bit and 64-bit versions of PowerShell, and the failure is happening on the version that doesn't have Execution Policy set. The setting does not apply to both versions, so you have to explicitly set it twice.

Look in your Windows directory for System32 and SysWOW64.

Repeat these steps for each directory:

Navigate to WindowsPowerShell\v1.0 and launch powershell.exe
Check the current setting for ExecutionPolicy:

Get-ExecutionPolicy -List
Set the ExecutionPolicy for the level and scope you want, for example:

Set-ExecutionPolicy -Scope LocalMachine Unrestricted

Note that you may need to run PowerShell as administrator depending on the scope you are trying to set the policy for.

You can read a lot more here: Running Windows PowerShell Scripts

回答3:

The problem is that the execution policy is set on a per user basis. You'll need to run the following command in your application every time you run it to enable it to work:

Set-ExecutionPolicy -Scope Process -ExecutionPolicy RemoteSigned

There probably is a way to set this for the ASP.NET user as well, but this way means that you're not opening up your whole system, just your application.

(Source)

回答4:

you need to run set-executionpolicy:

Set-ExecutionPolicy Unrestricted

Hope this helps!

回答5:

I had a similar issue and noted that the default cmd on Windows Server 2012 was running the x64 one.

For Windows 7, Windows 8, Windows Server 2008 R2 or Windows Server 2012, run the following commands as Administrator:

x86

Open C:\Windows\SysWOW64\cmd.exe Run the command: powershell Set-ExecutionPolicy RemoteSigned

x64

Open C:\Windows\system32\cmd.exe Run the command powershell Set-ExecutionPolicy RemoteSigned

You can check mode using

In CMD: echo %PROCESSOR_ARCHITECTURE% In Powershell: [Environment]::Is64BitProcess

I hope this help you.

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