Microsoft ActiveSync 4.5 is a new software update release for Windows Mobile powered devices that provides a great synchronization experience with Windows-powered PCs and Microsoft Outlook.

Supported features
ActiveSync acts as the gateway between your Microsoft Windows-powered PC and Windows Mobile powered device and allows you to synchronize Microsoft Outlook information, Microsoft Office documents, pictures, music, videos and applications to and from your device.

In addition to synchronizing with a desktop PC, ActiveSync allows you to synchronize Microsoft Outlook information directly with Microsoft Exchange Server 2003 and Microsoft Exchange Server 2007, so that you can keep your e-mail, calendar data, tasks and contact information updated wirelessly when you™re away from your desktop or tablet PC.

Some of the new features added to Microsoft ActiveSync 4.5 include:
* Several changes were made in ActiveSync 4.5 that help improve issues related to setup, partnerships, and connectivity with the PC and Microsoft Exchange.
* In addition, ActiveSync 4.5 includes a troubleshooter utility that scans your computer and device to identify problems and offers information and corrective actions to solve them.
* Customers using Windows Mobile 5.0 devices with the Messaging and Security Feature Pack and synchronizing to Microsoft Exchange Server 2003 Service Pack 2 or Microsoft Exchange Server 2007 will benefit from the following feature enhancements included in ActiveSync 4.5:
o Direct Push Technology
o Local Device Wipe
o Certificate powered authentication to Microsoft Exchange
* Customers using Windows Mobile 6 and synchronizing to Microsoft Exchange Server 2007 will benefit from the following feature enhancements:
o HTML formatted e-mail
o IRM protected e-mail

The following mobile device operating systems are supported by ActiveSync 4.5:

* Microsoft Windows Mobile 6.0
* Microsoft Windows Mobile 5.0
* Messaging and Security Feature Pack for Microsoft Windows Mobile 5.0
* Microsoft Windows Mobile 2003 Second Edition
* Microsoft Windows Mobile 2003
* Microsoft Pocket PC 2002, Microsoft
*Microsoft Smartphone 2002, Microsoft