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Thread: How do you check on Vista if .exe file is 32-bit or 64-bit?

  1. #1
    gee9782@yahoo.com Guest

    How do you check on Vista if .exe file is 32-bit or 64-bit?

    Assume 64-bit Vista and assume that you do not want to run the .exe
    file
    Is there a utility that will read an .exe file and provide specifics
    like 32-bit or 64-bit code?

    I have one utility that will provide a lot of info included in .exe
    file but none
    indicates if the code was compiled as 32-bit or 64-bit


  2. #2
    Brink Guest

    Re: How do you check on Vista if .exe file is 32-bit or 64-bit?

    In the 64-bit Vista Task Manager (CTRL+SHIFT+ESCAPE), in the Processes
    tab, you can look to see if the running EXE file has "*32" next to it.
    If it does, then it is a 32-bit program. If not, then it is a 64-bit
    program.

  3. #3
    gee9782@yahoo.com Guest

    Re: How do you check on Vista if .exe file is 32-bit or 64-bit?

    My question is not about a running/executing program.
    My question is about an .exe file without ever running/executing it.

  4. #4
    Ralph Guest

    Re: How do you check on Vista if .exe file is 32-bit or 64-bit?

    Since there is work involved in producing a 64 bit version of a program, in
    a world where almost all the OSs are 32 bit,
    all programs advertise when their program is written for 64 bit. It's a
    selling point.

    Check the user requirements for any program.
    When you don't find it, it'll be 32 bit.

  5. #5
    Tom Lake Guest

    Re: How do you check on Vista if .exe file is 32-bit or 64-bit?

    Yes but is there a programmatic way to tell if an executable
    is 32- or 64-bit without running it? Maybe something in the header?

  6. #6

    Re: How do you check on Vista if .exe file is 32-bit or 64-bit?

    There is a GNU-util called "file". I think you could either download GNU Coreutils for Windows or you can compile your own version of "file" using Cygwin.

    The usage of "file" is very easy; just type:
    Code:
    file {filename}
    It'll output something like that (on Linux):
    Code:
    {filename}: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for GNU/Linux 2.6.8, dynamically linked (uses shared libs), stripped

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