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我创建了一个小 exe 来修改一些 DCOM 设置。当我尝试在运行 exe 的不同服务器上修改设置时,exe 工作正常,但当我尝试在运行 exe 的同一服务器上修改设置时,exe 无法正常工作

如果我将 strComputer 设置为另一台远程计算机的名称,则代码可以工作并更新远程计算机上的正确设置

尝试更新同一服务器时运行此程序时遇到的错误是我抛出的错误:

无法获取安全描述符',返回码为 -2147023582

代码:

Dim strComputer As String = "."   'localhost
Dim objWMIService As Object = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2")

' Get an instance of Win32_SecurityDescriptorHelper
Dim objHelper = GetObject("winmgmts:\\" & strComputer & "\root\CIMV2:Win32_SecurityDescriptorHelper")


' Obtain an instance of the the class using a key property value.
Dim objApp As Object = objWMIService.Get("Win32_DCOMApplicationSetting.AppID='{E9E35B75-5B49-4C13-B928-239F78D695A6}'")


' Get the existing security descriptor for the App
Dim objSD As Object
Dim ret = objApp.GetLaunchSecurityDescriptor(objSD)
If ret <> 0 Then
  Throw new ApplicationException("Could not get security descriptor: " & ret)
End If


' Convert file security descriptor from Win32_SecurityDescriptor format to SDDL format
Dim SDDLstring As String
ret = objHelper.Win32SDToSDDL(objSD, SDDLstring)
If ret <> 0 Then
  Throw new ApplicationException("Could not convert to SDDL: " & ret)
End If


' Set the Launch security descriptor for the App
SDDLstring = SDDLstring & "(A;;CCDCLCSWRP;;;NS)"  
ret = objHelper.SDDLToWin32SD(SDDLstring, objSD)
If ret <> 0 Then
  Throw new ApplicationException("Could not translate SDDL String to Win32SD: " & ret)
End If

ret = objApp.SetLaunchSecurityDescriptor(objSD)
If ret <> 0 Then
  Throw new ApplicationException("Could not set security descriptor: " & ret)
End If
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1 回答 1

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我尝试在 Windows 7 上运行您的程序并遇到了同样的问题。最初我认为添加Security参数你的Moniker 字符串可以解决问题,但它没有。然后我以管理员身份运行您的程序并且它工作。所以似乎缺少一些安全特权。

于 2011-02-04T19:09:11.827 回答