Symptoms
You may experience problems with Active Documents that will be used on a Web server. The Active Document works on the development computer but fails on computers that try to access it over the Internet. You may receive the following error message:

Internet Explorer is opening file of unknown type:
<Name of Document>.VBD from Internet Explorer reports this generic message whenever it encounters problems while processing a .vbd file.
Resolution
This problem can be caused by one of the following scenarios:The registry contains a .vbd extension entry.You are trying to download a Microsoft Data Access Components (MDAC) component with your .vbd file.The wrong version of Visual Basic run-time or OLE files are referenced.You are using the wrong .vbd file.You are using an out-dated .vbd file.The Actxprxy.dll file is missing or is not registered properly.The Active Document .exe or .dll file is not registered properly.The Active Document is not signed or safe for scripting.There is a run-time error in the initialization code of the Active Document.Dependent files are not being downloaded.Other problems that can occur.