If you are looking for a specific or technical whitepaper about this file, could you clarify if you are researching legacy software security or COM object architecture ? I can then help you find more targeted documentation. PRB: Err Msg "Missing or Not Registered VB6tmpl.tlb" in VB6

vb6tmpltlb is nor a common VB6 file. It most likely originates from:

It is typically registered in the Windows Registry under:

Analysis of vb6tmpltlb : The Visual Basic 6 Object Model Type Library