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Possible Duplicate:
Quick way to tell if an installed application is 64-bit or 32-bit

What's the easiest way to know if a Windows EXE is 32-bit or 64-bit?

marked as duplicate by BinaryMisfit Jan 17 '11 at 14:36

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • A valid x64 binary will fail to run (on 32-bit Windows) with a "Not a valid Win32 application" error. However, this is hardly the best way to test as you can get the error for other reasons (file corruption, etc). – DMA57361 Jan 17 '11 at 14:33
  • Refer :: superuser.com/questions/103071/… – Makesh Aug 8 '13 at 4:38