PowerShell，仅在尚未设置的情况下运行设置执行?

Question

我有一个脚本试图运行这些...

Set-ExecutionPolicy -scope CurrentUser RemoteSigned -Force -ea silent
Set-ExecutionPolicy RemoteSigned -Force -ea silent

但是我收到此错误：

Set-ExecutionPolicy : Windows PowerShell updated your execution policy successfully, but the setting is overridden by a policy defined at a
more specific scope.  Due to the override, your shell will retain its current effective execution policy of Bypass. Type "Get-ExecutionPolicy
-List" to view your execution policy settings.

所以我试了这个：

if ($(Get-ExecutionPolicy) -ne "RemoteSigned") {
Set-ExecutionPolicy -scope CurrentUser RemoteSigned -Force -ea silent
Set-ExecutionPolicy RemoteSigned -Force -ea silent
}

但是我得到同样的错误(我认为如果我尝试这个，这可能会跳过if正文。

然后我尝试了

Set-ExecutionPolicy -Scope MachinePolicy Unrestricted

但我收到此错误：

Cannot set execution policy. Execution policies at the MachinePolicy or UserPolicy scopes must be set through Group
Policy.

但我不会在我的家庭系统上使用策略或任何与 AD 相关的内容。

Get-ExecutionPolicy -list
Scope ExecutionPolicy
----- ---------------
MachinePolicy       Undefined
UserPolicy       Undefined
Process       Undefined
CurrentUser    RemoteSigned
LocalMachine    RemoteSigned

如果未设置策略，如何运行Set-Execution，如果未设置，则跳过该策略？

Answer 1

如果未指定默认范围，则默认范围为LocalMachine。出现该消息是因为CurrentUser优先于LocalMachine。一种检查方法是：

# [optional] temporarily suppress execution policy warnings
$E = $ErrorActionPreference
$ErrorActionPreference = 'SilentlyContinue'
if ((Get-ExecutionPolicy -Scope LocalMachine) -ne "RemoteSigned") {
# will always error if CurrentUser scope is set already
Set-ExecutionPolicy RemoteSigned -Scope LocalMachine -Force
}
if ((Get-ExecutionPolicy -Scope CurrentUser) -ne "RemoteSigned") {
Set-ExecutionPolicy RemoteSigned -Scope CurrentUser -Force
}
$ErrorActionPreference = $E

由于某种原因，警告直接写入控制台，因此无法正常禁止显示警告。

---

或者，您可以仅设置CurrentUser范围。如果不使用组策略，则只需担心三个作用域。最高的优先(设置较低的将显示警告)：

1. Process：仅为当前进程Set-ExecutionPolicy RemoteSigned -Scope Process设置
2. CurrentUser：仅为当前用户设置：Set-ExecutionPolicy RemoteSigned -Scope CurrentUser
3. LocalMachine：为所有用户设置：Set-ExecutionPolicy RemoteSigned

有关更多信息，请查看about_Execution_Policies