Thank you for the information you provided. I just received the same warning message in the production log file after installing Bitnami Odoo in a Windows Server 2012 machine.
I'm going to forward this information to our engineering team and they will take a look at it to remove that message from the log. I can't provide you with an estimation of when this will be fixed. As I mentioned, this is a warning message, and you should not worry about it.
We use the Python's installer to install Python in the machine. As we use the 32bit installer and you have a 64bit machine, the program uses the SysWOW64 folder to store the data.