Modifying User Cannot Change Password (WinNT Provider)

The ability of a user to change their own password is a permission that can be granted or denied. To deny this permission, add the ADS_UF_PASSWD_CANT_CHANGE flag to the userFlags property of the user object. To grant this permission, remove the ADS_UF_PASSWD_CANT_CHANGE flag from the userFlags property of the user object.

Example Code

The following code example shows how to change the ADS_UF_PASSWD_CANT_CHANGE flag of the userFlags property of a user object.

Const ADS_UF_PASSWD_CANT_CHANGE = &H40

Sub SetUserCannotChangePassword(strDomain As String, strUser As String, strUserCred As String, strPassword As String, fUserCannotChangePassword As Boolean)
    Dim oUser As IADs
    
    strPath = "WinNT://" + strDomain + "/" + strUser
    
    If "" <> strUserCred Then
        Dim dso As IADsOpenDSObject
        
        ' Bind to the group with the specified user name and password.
        Set dso = GetObject("WinNT:")
        Set oUser = dso.OpenDSObject(strPath, strUserCred, strPassword, 1)
    Else
        ' Bind to the group with the current credentials.
        Set oUser = GetObject(strPath)
    End If
    
    lUserFlags = oUser.Get("userFlags")
    
    If fUserCannotChangePassword Then
        lUserFlags = lUserFlags Or ADS_UF_PASSWD_CANT_CHANGE
    Else
        lUserFlags = lUserFlags And Not ADS_UF_PASSWD_CANT_CHANGE
    End If
    
    ' Modify the userFlags property.
    oUser.Put "userFlags", lUserFlags
    
    ' Commit the changes to the server.
    oUser.SetInfo
End Sub

The following code example shows how to change the ADS_UF_PASSWD_CANT_CHANGE flag of the userFlags property of a user object.

//***************************************************************************
//  SetUserCannotChangePassword()
//***************************************************************************

HRESULT SetUserCannotChangePassword(LPCWSTR pwszDomain,
                                    LPCWSTR pwszUser, 
                                    LPCWSTR pwszUserCred, 
                                    LPCWSTR pwszPassword,
                                    BOOL fCannotChangePassword)
{
    if(NULL == pwszDomain || 
        NULL == pwszUser)
    {
        return E_INVALIDARG;
    }
    
    HRESULT hr;
    IADs *pads;

    CComBSTR sbstrADsPath = L"WinNT://";
    sbstrADsPath += pwszDomain;
    sbstrADsPath += "/";
    sbstrADsPath += pwszUser;

    hr = ADsOpenObject( sbstrADsPath,
                        pwszUserCred,
                        pwszPassword,
                        ADS_SECURE_AUTHENTICATION,
                        IID_IADs, 
                        (void**)&amp;pads);

    if(SUCCEEDED(hr))
    {
        CComBSTR sbstrPropName = "userFlags";
        CComVariant svar;
        
        hr = pads->Get(sbstrPropName, &amp;svar);
        if(SUCCEEDED(hr))
        {
            if(fCannotChangePassword)
            {
                svar.lVal |= ADS_UF_PASSWD_CANT_CHANGE;
            }
            else
            {
                svar.lVal &amp;= ~ADS_UF_PASSWD_CANT_CHANGE;
            }

            // Perform the change.
            hr = pads->Put(sbstrPropName, svar);

            // Commit the change.
            hr = pads->SetInfo();
        }
        
        pads->Release();
    }

    return hr;
}