The default settings of Windows disable the PowerShell script execution. This protects your computer in case a malicious PowerShell script would try to make changes on your machine. The same settings prevent you from executing your own automation scripts too.

To enable PowerShell script execution

in Windows 10

1. Click the Windows button and type powershell into the text box,
   
2. Right-click the Windows PowerShell item and select Run as administrator,
   
3. In the User Account Control window click the Yes button,
4. In the PowerShell window execute

   Set-ExecutionPolicy unrestricted

    

5. Press Y and the Enter key to enable the PowerShell script execution.
   

in Windows 7

1. Click the Windows button and type powershell into the text box,
   
2. Right-click the Windows PowerShell item and select Run as administrator,
   
3. In the User Account Control window click the Yes button,
   
4. In the PowerShell window execute

   Set-ExecutionPolicy unrestricted