A PowerShell execution policy is a safety measure which determines the conditions under which PowerShell scripts are allowed to be run. Its main purpose is to prevent unintentional execution of unwanted scripts.
There are seven different types of execution policies in PowerShell.
Undefined
:
Undefined
execution policy, the effective execution policy is Restricted
for Windows clients and RemoteSigned
for Windows Servers.Default
:
Restricted
on Windows clients and RemoteSigned
on Windows servers.Restricted
:
.ps1xml
), module script files (.psm1
) and profiles (.ps1
).AllSigned
:
RemoteSigned
:
Unblock-File
commandlet.
"From the internet" means that the files were downloaded via Microsoft Edge or Internet Explorer. If the file was obtained through another browser or method, then there is no way for Windows to know if it is "from the Internet" or not.
Unrestricted
:
Bypass
:
Execution policies can be set at five different levels called Scopes.
Hill