Therefore you needed to install a 32 bit version of your OS.
But, finally, it has arrived.
Microsoft created a 64 bit Directory Synchronization tool for Office 365.
For the underlying sync engine FIM2010 ( Forefront Identity Manager 2010 ) is used.
To download the 64-bit version of the directory synchronization tool from the Office 365 portal:
- In the header, click Admin.
- On the Admin page, in the left pane, click Users.
- At the top of the Users page, click the link next to Active Directory synchronization.
- Under step 4, select Windows 64-bit version, and then click Download.
Office 365 Wiki for 64 bit sync tool : http://community.office365.com/en-us/w/sso/555.aspx