Microsoft ActiveSync 4.5 is the latest synchronization software for Windows Mobile-based Pocket PCs and Smartphones. ActiveSync 4.5 contains a set of security enhancements that provide a more secure syncing experience with a Windows PC, specifically:

* Windows XP SP2 security pop up warnings that appear the first time a Windows Mobile devices is docked have been eliminated.
* Remote PC Sync (via Wifi or LAN) is turned off by default. However, users can turn this functionality back on by navigating to File > Connection Settings and checking "Allow network (Ethernet)..."