Often, PowerShell can prevent the running of the build.ps1 file. You can get an error on the PowerShell screen that build.ps1 cannot be loaded because running scripts is disabled on the system. This restriction in running the file is due to the default security settings available in PowerShell.
Open the PowerShell window and change the directory to the folder of the Cake build example repository that was downloaded earlier, and run the .\build.ps1 command. If the execution policy on the system has not been changed from the default, this should give you the following error:
To view the current execution policy configurations ...
