How to repair COMException error 80040154? To find the DLL, When you have the DLL, register it by running.vba macro to strip metadata from pdf files Before posting on our computer help forum, you must register. Click here it s easy and free. Computer Hope Forum.I use Solidworks 2001 SP 14. I am trying to use the dsofile.dll from Microsoft to read the custom properties from a file that is referenced by a drawing.Mar 28, 2010 · How to register com dll did u mean select my com dll and set it s Register Unable to create registration information for file named Dsofile.dll.How to Register a DLL. This wikiHow teaches you how to register a DLL file on a Windows computer. Registering a DLL can fix startup issues for some programs.