I am using Windows Power Shell 2.0 on 64-bit Windows 7 Professional. I have a script on my desktop that causes the following error when I try to run it: File C:\ Users\ User Name\ Desktop\ Script.ps1 cannot be loaded. The file C:\ Users\ User Name\ Desktop\ Script.ps1 is not digitally signed. The script will not execute on the system. Please see get-help about_signing for more details. At line:1 char:54 + C:\ Users\ User Name\ Desktop\ Test Get Windows Update Log.ps1 < + Category Info : Not Specified: [], PSSecurity Exception + Fully Qualified Error Id : Runtime Exception I am both a domain administrator and a local administrator, and if I run Get- Execution Policy - List, I can see that the Group Policy Object I created to configure Power Shell is correctly applying the Remote Signed execution policy at the machine level: Scope Execution Policy Machine Policy Remote Signed User Policy Undefined Process Undefined Current User Undefined Local Machine Undefined I created the script myself in Notepad, and used the Sysinternals' streams utility and the file Properties dialog to confirm that the script is not being treated as having come from the Internet. If I copy the script to a network share on a domain server, then it's allowed to execute. If I run Set- Execution Policy - Execution Policy Unrestricted - Scope Local Machine then the local script is still not allowed to execute, which makes sense since the execution policy at the Machine Policy scope will take precedence. As documented by about_ Execution_ Policies, the Remote Signed policy means: Scripts can run. Requires a digital signature from a trusted publisher on scripts and configuration files that are downloaded from the Internet (including e-mail and instant messaging programs). Does not require digital signatures on scripts that you have run and that you have written on the local computer (not downloaded from the Internet).
If you have tried to run a Power Shell script that isn't signed, you've likely run into the security error File cannot be loaded. The file is not digitally signed. The script will not be executed on the system. This means that the script is not trusted to be run on your system. If you'd like to sign the script, here is a walkthrough: Alternatively, you can change your signing policy. This tends to be the practice most of the time You can choose, Set- Execution Policy Unrestricted or, replace unrestricted with Restricted, All Signed, or Remote Signed Nathan Lasnoski.
TOPIC about_ Signing SHORT DESCRIPTION Explains how to sign scripts so that they comply with the Windows Power Shell execution policies. LONG DESCRIPTION The Restricted execution policy does not permit any scripts to run. The All Signed and Remote Signed execution policies prevent Windows Power Shell from running scripts that do not have a digital signature. This topic explains how to run selected scripts that are not signed, even while the execution policy is Remote Signed, and how to sign scripts for your own use. For more information about Windows Power Shell execution policies, see about_ Execution_ Policy. TO PERMIT SIGNED SCRIPTS TO RUN When you start Windows Power Shell on a computer for the first time, the Restricted execution policy (the default) is likely to be in effect. The Restricted policy does not permit any scripts to run. To find the effective execution policy on your computer, type: Get- Execution Policy To run unsigned scripts that you write on your local computer and signed scripts from other users, start Windows Power Shell with the Run as Administrator option and then use the following command to change the execution policy on the computer to Remote Signed: Set- Execution Policy Remote Signed For more information, see the help topic for the Set- Execution Policy cmdlet. RUNNING UNSIGNED SCRIPTS ( REMOTESIGNED EXECUTION POLICY) If your Windows Power Shell execution policy is Remote Signed, Windows Power Shell will not run unsigned scripts that are downloaded from the Internet, including unsigned scripts you receive through e-mail and instant messaging programs. If you try to run a downloaded script, Windows Power Shell displays the following error message: The file cannot be loaded. The file is not digitally signed. The script will not execute on the system.
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