BUG: "Old format or invalid type library" error when automating Excel on 64 bit server 2008 Article ID: 320369 - Last Review: December 11, 2009 - Revision: 9.0 BUG: "Old format or invalid type library" error when automating Excel View products that this article applies to. This article was previously published under Q320369 If you automate Microsoft Excel with Microsoft Visual Basic .NET, Microsoft Visu...You receive this error calling Create a folder under c:\Windows\SysWOW64\config\systemprofile\Desktop