Free Download Microsoft ActiveSync 4.5 and install Microsoft ActiveSync 4.5 if you use Windows XP or an earlier version of the Windows operating system on your computer and you want to sync Microsoft Office Outlook data or other files, including pictures and music, between your phone and your computer.
OS: ActiveSync is only compatible with Windows XP or earlier. If you run Windows Vista or Windows 7, download Windows Mobile Device Center.
Download ActiveSync 4.5 (Worldwide English)
For all other languages, visit the Microsoft Download Center