32bit-64bit - w3toppers.com

How can I test a Windows DLL file to determine if it is 32 bit or 64 bit? [duplicate]

A crude way would be to call dumpbin with the headers option from the Visual Studio tools on each DLL and look for the appropriate output: dumpbin /headers my32bit.dll PE signature found File Type: DLL FILE HEADER VALUES 14C machine (x86) 1 number of sections 45499E0A time date stamp Thu Nov 02 03:28:10 2006 0 … Read more

Why do 64-bit DLLs go to System32 and 32-bit DLLs to SysWoW64 on 64-bit Windows?

I believe the intent was to rename System32, but so many applications hard-coded for that path, that it wasn’t feasible to remove it. SysWoW64 wasn’t intended for the dlls of 64-bit systems, it’s actually something like “Windows on Windows64”, meaning the bits you need to run 32bit apps on a 64bit windows. This article explains … Read more

Retrieving the COM class factory for component with CLSID {XXXX} failed due to the following error: 80040154

In VS – project properties – in the Build tab – platform target =X86