用cb修改IE的主页弹出对话框提示“failed to set date ofr "start page" ”的异常，哪位大侠知道如何解决不？多谢！

用cb修改IE的主页弹出对话框提示“failed to set date ofr "start page" ”的错误，哪位大侠知道怎么解决不？谢谢！！ - C++ Builder / Windows SDK/API
代码如下：
 void __fastcall SetHomePage(AnsiString urlStr)
 {
  if( urlStr== NULL)
  {
  return;
  }

  String KeyName = "\\SOFTWARE\\Microsoft\\Internet Explorer\\Main";
  TRegistry *Registry = new TRegistry;
  TRegistry *Registry1 = new TRegistry;
  try
  {
  Registry->RootKey = HKEY_LOCAL_MACHINE;
  Registry1->RootKey = HKEY_CURRENT_USER;
  bool bl = Registry->OpenKey(KeyName, false);
  bool b2 = Registry1->OpenKey(KeyName, false);
  if(bl && b2)
  {
  // if(Registry->DeleteKey("Start Page"))
  // {
  Registry->WriteString("Start Page",urlStr);
  Registry1->WriteString("Start Page",urlStr);
   
  // }
  }
  Registry->CloseKey();
  Registry1->CloseKey();
  }
  __finally
  {
  delete Registry;
  delete Registry1;
  }
 }

------解决方案--------------------
检查是否有杀毒软件屏蔽了写注册表的操作(大部分杀毒软件都对注册表中这个位置进行了监控)

另外，KeyName中，Software前不需要\\