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  4. How to run existing 32 bit application on 64 bit windows OS

How to run existing 32 bit application on 64 bit windows OS

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  • A Offline
    A Offline
    am 2009
    wrote on last edited by
    #1

    Hi I have developed one windows application, which is developed on 32 bit OS. How can run this application on 64 Bit OS. DO I need to compile it 64 bit OS ? Should I treate as seperate 64 bit product. Thanks Atul

    D S 2 Replies Last reply
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    • A am 2009

      Hi I have developed one windows application, which is developed on 32 bit OS. How can run this application on 64 Bit OS. DO I need to compile it 64 bit OS ? Should I treate as seperate 64 bit product. Thanks Atul

      D Offline
      D Offline
      DaveAuld
      wrote on last edited by
      #2

      Nope, it should run just fine. Most Apps today are still 32-bit, unless they state otherwise.

      Dave Don't forget to rate messages!
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      • A am 2009

        Hi I have developed one windows application, which is developed on 32 bit OS. How can run this application on 64 Bit OS. DO I need to compile it 64 bit OS ? Should I treate as seperate 64 bit product. Thanks Atul

        S Offline
        S Offline
        Sauro Viti
        wrote on last edited by
        #3

        It's not necessary: 64 bit versions of Windows have the so called WOW (Windows On Windows), and through it they give you a 32 bit subsystem. the most of existing 32 bit application run properly on 64 bit operating systems; however you should be aware that some functionalities will be treated in a special way (e.g. accesses to the registry will be redirected to some specific locations). If you want, you can compile your application for 64 bit, but you should pay attention to portability issues, and you should provide two separate versions for 32 and 64 bit if you plan to deploy the application to both the architectures.

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