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I got a Microsoft Windows 8 Professional 32/64-bit key from using MSDNAA/DreamSpark. Since I have to use the schools software to do exams and it only supports 32 bit, I have to use the 32 bit version to take exams. I also want to use the 64 bit version so I could make use of my 6GB of RAM. But DreamSpark provides just one key for both version. Can I use that one for both?

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1) Usually the one key works for both installs. 2) Why not run the 32 bit school software on your 64 bit win8? That should just work. – Hennes Apr 13 '13 at 10:33
    
I tried when using win7 and it doesn't not work. That "software" only works on 32 bit version. – Wu Kua Apr 13 '13 at 11:14
    
Is it old DOS (16 bit) software? (Win 7 X64 dropped support for old 16 bit programs. Win 7 32bit still has that. I assume the same is true for the win 8 versions). – Hennes Apr 13 '13 at 11:16
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The license only gives you the right to have either x86 or x64 installed at any given time. – Ramhound Apr 13 '13 at 11:33
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@WuKua - Since the license you have allows a clean full installation of Windows 8 instead of just an upgrade license your welcome to do that. Although have you actually tried the software on a x64 installation? – Ramhound Apr 13 '13 at 12:09

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