如何阻止运行中的Windows Service在MSI卸载时被自动移除

我使用基于WiX的ServiceInstall元素构建MSI安装程序部署Windows服务，服务安装正常，可手动在服务列表中启动它。通过「添加或删除程序」卸载MSI时遇到两种场景：

• 服务未运行：卸载过程干净（符合预期）
• 服务运行：MSI仍会自动停止并移除服务

我希望当服务处于运行状态时，卸载能弹出默认Windows提示框（提示用户关闭正在运行的程序）。

当前服务安装代码如下：

new ServiceInstaller
{
    Name = "IP.ServiceInstaller.exe",
    DisplayName = "[IASSERVICENAME]",
    Description = "This is a Service",
    StartOn = null, //set it to null if you don't want service to start as during deployment
    StopOn = SvcEvent.InstallUninstall,
    RemoveOn = SvcEvent.Uninstall_Wait,
    DelayedAutoStart = false,
    ServiceSid = ServiceSid.none,
    FirstFailureActionType = FailureActionType.restart,
    SecondFailureActionType = FailureActionType.restart,
    ThirdFailureActionType = FailureActionType.runCommand,
    RestartServiceDelayInSeconds = 30,
    ResetPeriodInDays = 1,
    PreShutdownDelay = 1000 * 60 * 3,
    Account = "[USERNAME]",
    Password = "[PASSWORD]"
}),

核心是调整StopOn和RemoveOn的属性值，让Windows Installer在卸载时不自动停止服务，转而触发系统默认的提示弹窗：

1. 修改StopOn属性：将SvcEvent.InstallUninstall改为SvcEvent.Install，仅在安装流程中处理服务停止逻辑，卸载阶段不再自动停止服务。
2. 修改RemoveOn属性：将SvcEvent.Uninstall_Wait改为SvcEvent.Uninstall，移除_Wait后缀后，Windows Installer会在卸载前检查服务状态，若服务运行则弹出默认提示框，等待用户确认后再继续卸载。

修改后的代码片段：

new ServiceInstaller
{
    Name = "IP.ServiceInstaller.exe",
    DisplayName = "[IASSERVICENAME]",
    Description = "This is a Service",
    StartOn = null, //set it to null if you don't want service to start as during deployment
    StopOn = SvcEvent.Install, // 仅安装时处理服务停止
    RemoveOn = SvcEvent.Uninstall, // 卸载时触发系统提示
    DelayedAutoStart = false,
    ServiceSid = ServiceSid.none,
    FirstFailureActionType = FailureActionType.restart,
    SecondFailureActionType = FailureActionType.restart,
    ThirdFailureActionType = FailureActionType.runCommand,
    RestartServiceDelayInSeconds = 30,
    ResetPeriodInDays = 1,
    PreShutdownDelay = 1000 * 60 * 3,
    Account = "[USERNAME]",
    Password = "[PASSWORD]"
}),

• StopOn = SvcEvent.Install：卸载阶段MSI不会主动执行停止服务的操作，保留服务运行状态；
• RemoveOn = SvcEvent.Uninstall：Windows Installer会自动检测服务运行状态，若服务正在运行则弹出系统默认提示框，告知用户需关闭程序后才能继续卸载，等待用户操作后再完成服务移除流程。

内容的提问来源于stack exchange，提问作者Mithilesh L