NetUserGetInfo / NetLocalGroupGetInfo返回错误1722 [英] NetUserGetInfo/NetLocalGroupGetInfo returning error 1722

问题描述

我有以下的code（VB.NET），其目的是确定给定的帐户名是指一个本地组或用户帐户。这将只要求用户/群组一台机器，而不是一个域上。

I have the following code (VB.NET) which is designed to determine if a given account name refers to a local group or a user account. This will only be called for accounts/groups on a machine, not a domain.

Module netapi
    Private Declare Function NetUserGetInfo Lib "Netapi32.dll" ( _
         ByVal ServerName As String, _
         ByVal UserName As String, _
         ByVal level As Integer, _
         ByRef BufPtr As IntPtr) As Integer

    Private Declare Function NetLocalGroupGetInfo Lib "Netapi32.dll" ( _
         ByVal ServerName As String, _
         ByVal GroupName As String, _
         ByVal level As Integer, _
         ByRef BufPtr As IntPtr) As Integer

    Declare Unicode Function NetApiBufferFree Lib "Netapi32.dll" _
    (ByRef buffer As IntPtr) As Long

    Public Function GetPrincipalType(ByVal MachineName As String, ByVal AccountName As String) As String
        Dim bufPtr As IntPtr
        Dim lngReturn As Integer = NetUserGetInfo("\\" & MachineName, AccountName, 0, bufPtr)
        Console.WriteLine("NetUserGetInfo return value = " & lngReturn)
        Call NetApiBufferFree(bufPtr)
        bufPtr = IntPtr.Zero
        If lngReturn = 0 Then
            Return "User"
        End If
        lngReturn = NetLocalGroupGetInfo("\\" & MachineName, AccountName, 0, bufPtr)
        Console.WriteLine("NetLocalGroupGetInfo return value = " & lngReturn)
        Call NetApiBufferFree(bufPtr)
        bufPtr = IntPtr.Zero
        If lngReturn = 0 Then
            Return "Group"
        End If
        Return "NotFound"
    End Function
End Module

我的问题是，NetUserGetInfo / NetLocalGroupGetInfo总是调用返回错误code 1722（RPC服务器不可用）。我使用本地计算机名和远程Windows服务器，关于这一点我有管理员权限，具有相同的结果的名字尝试。

My problem is that the NetUserGetInfo/NetLocalGroupGetInfo calls always return error code 1722 (RPC Server unavailable). I've tried using the local machine name and the name of remote Windows servers, on which I have admin rights, with the same result.

如果我更换\\＆放大器;计算机名与没有然后我得到的错误二千二百二十分之二千二百二十一（用户/组未找到），无论是否引用的帐户/组由帐户名确实存在。

If I replace "\\" & MachineName with Nothing then I get error 2221/2220 (User/Group not found) regardless of whether or not the account/group referenced by AccountName actually exists.

请帮忙。我究竟做错了什么？

Please help. What am I doing wrong?

更新：不知道这会有所帮助，但我试着运行上面的两个运7和Win XP SP3。我的编译目标定位在.NET 4.0客户端框架。

Update: Not sure if this helps, but I've tried running the above on both Win 7 and Win XP SP3. My compilation is targetting the .NET 4.0 Client framework.

推荐答案

NetUserGetInfo 和 NetLocalGroupGetInfo 既期待统一code（宽）字符串参数。你能声明的Uni code 这些方法和确定问题是否依然存在？

NetUserGetInfo and NetLocalGroupGetInfo both expect Unicode (wide) string parameters. Can you Declare Unicode these methods and confirm whether the problem persists?

另请参见 http://www.xtremedotnettalk.com/showthread.php?t= 69609

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