For security reasons, Windows PowerShell 1.0 supports an execution policy feature. It determines whether scripts are allowed to run and whether they must be digitally signed. By default, the execution policy is set to Restricted, which is the most secure policy. If you want to run scripts or load configuration files, you can change the execution policy by using the Set-ExecutionPolicy cmdlet. To do this, in the vSphere PowerCLI console window, type the following: Set-ExecutionPolicy RemoteSigned