To determine if office 2010 is 32 bit or 64 bit, we could check a registry key named Bitness. For more information, please refer to this article:
Also here is a resource with a same question you could refer to:
Detect whether Office 2010 is 32bit or 64bit via the registry.
Given solution at link:http://technet.microsoft.com/en-us/library/ee681792.aspx. is applicable only when we have outlook installed on a
m/c. Suppose outlook is not installed on a m/c then how can we detect whethe office 2010 is 32 or 64 bit?
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