ADO连接CreateInstance在Windows Server 2003上失败

Question

我有一个在Windows 7上正常运行但在Server 2003上运行失败的应用程序。失败的行是下面的第三行

_ConnectionPtr pConnection = NULL;
::CoInitialize(NULL);
HRESULT hr = pConnection.CreateInstance(__uuidof(Connection));

返回的HRESULT是0x80004002（不支持接口）。两台机器都安装了MDAC，我看不出为什么会收到此错误。可能发生这种情况的原因是什么？

Answer 1

这可能会有所帮助......

An ADO application does not run on down-level operating systems after you recompile it on a computer that is running Windows 7 SP 1 or Windows Server 2008 R2 SP 1 or that has KB983246 installed