PowerShell: Because scripts are disabled on this system

You cannot run the Chocolateyinstall.pal script file while installing chocolatey (official website).

After reviewing the information, the following solutions are obtained:

The active execution policy is most likely the Restricted (default setting) when Windows PowerShell is first started on a computer.

Restricted execution policy does not allow any scripts to run.
AllSigned and remotesigned execution policies prevent Windows PowerShell from running scripts that do not have a digital signature.

This topic explains how to run the selected unsigned script, even if the execution policy is remotesigned, and explains how to
The script is signed for your own use.

For more information about Windows PowerShell execution policy, see About_execution_policy.

To learn about the active execution policy on your computer, type:

Get-executionpolicy

To run the unsigned script that you write and the signature script from another user on the local computer, use the following command to
To change the execution policy to remotesigned:

Set-executionpolicy remotesigned

For more information, see Set-executionpolicy.

PowerShell: Because scripts are disabled on this system