Determine Microsoft Database Access Engine Version

[zoulhom]

It seems that we have to use the 32 bits exe to install Microsoft Access Database Engine 2010 on a 64 bits machine if a previous OFFICE component is already present AND was a 32 bits component.
Is someone can help me about the registry key I have to use to know if an OFFICE component is present BUT is 32 bits?

Thank in advance.

[uconnfan]

As far as I understand, hidenori provided the location of the registration keys in a previous post in this thread. I have exactly the same scenario and the registry keys are checked to verify the bitness of MS Office.