Windows error 0x80004016, -2147467242

Invoking OLE in C# using OleCreateFromFile returns 0x800004016 Use of Ole1 services requiring DDE windows is disabled

I am trying to make use of the c# converted code over at this post: Releasing an OLE IStorage file handle in C# In this post, the OP looks to have created a custom class OLE32 which uses pinvoke to declare the IStorage and IOleObject interfaces, as well as the [...] read more