Will all 32 – bit applications work on a 64 – bit Operating System? [duplicate]

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QUESTION :

Possible Duplicate:
32-bit vs 64-bit systems

Will all 32 – bit applications work on a 64 – bit windows 7 Operating System?

ANSWER :

Windows 7 (64-bit) has 32-bit emulation layer and all applications that work in Windows 7 (32-bit) will work with 64-bit version also.

However, 32-bit drivers will not work.

Most will – some which make specific API calls may not (such as Anti Virus, Firewall, drivers or other “high level” software).

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