Execution Policy

 1. Restricted 

This is the default. PowerShell will not run any script, including PowerShell profiles.

2. RemoteSigned 

PowerShell will run any script that you create locally. But any script that has been detected as coming from the Internet, such as via Internet Explorer, Microsoft Outlook, Mozilla Firefox or Google Chrome must be digitally signed with a code signing certificate that is trusted by the computer.

3. AllSigned 

PowerShell will not run any script unless it has been digitally signed with a trusted code signing certificate.

4. Unrestricted 

PowerShell will make no attempts to hinder script execution and will run any script. If the script comes from an untrusted source, like the Internet, you will be prompted once to execute it. Though it is not preferred.

5. Bypass 

There is also a Bypass policy, which I don’t recommend for daily use. This policy will run any script without question or prompting. The assumption is that you have taken steps outside of Nothing is blocked and there are no warnings or prompts.PowerShell to verify the safety and integrity of the script.

6. Undefined 

There is no execution policy set in the current scope. If the execution policy in all scopes is Undefined, the effective execution policy is Restricted, which is the default execution policy.