Microsoft Download Center Archive

Microsoft ActiveSync 4.2

  • Published:
  • Version: 1.0
  • Category: Application
  • Language: English

Microsoft® ActiveSync® 4.2 is synchronization software for Windows Mobile®-based devices.

  • Microsoft ActiveSync 4.2 is a software release for Windows Mobile-based devices. ActiveSync provides a great synchronization experience with Windows®-based PCs and Microsoft Outlook right out of the box. ActiveSync acts as the gateway between your Windows-based PC and Windows Mobile-based device, enabling the transfer of Outlook information, Office documents, pictures, music, videos and applications to and from your device. In addition to synchronizing with a desktop PC, ActiveSync can synchronize directly with Microsoft Exchange Server 2003 so that you can keep your e-mail, calendar data, tasks and contact information updated wirelessly when you’re away from your PC.*

    Changes in ActiveSync 4.2 help resolve connectivity related issues with Microsoft Outlook, proxies, partnerships, and connectivity.

    • Microsoft Outlook Improvements: Resolves issues relating to error code 85010014.

    • Proxy/DTPT interaction Improvements: Improved auto configuration of device Connection Manager settings when desktop has no proxy path to the internet.

    • Improved Desktop Pass Thru behavior with ISA proxy failures.

    • Partnership improvements: Better resolution of multiple devices with the same name syncing with the same desktop.

    • Connectivity Improvements: Better handling of VPN clients (resolve unbinding of protocols from our RNDIS adapter). New auto detection of connectivity failure with user diagnostic alerts.

    ActiveSync 4.2 supports PC sync via USB cable, Bluetooth, or infrared connection.


Status: Deleted

This download is no longer available on The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.

FileSHA1 HashSize
eula.rtfca9424985c5bb1af61c009ffec1d2babd79c8a534 KB
readme.docb3bd2de75e59087c58de41cd9883c9fdf7d417ca6 KB
setup.exef4faff26f3f8854cb2105f2d5ca85135b30aa9f16.40 MB

System Requirements

Operating Systems: Windows 2000 Service Pack 4, Windows Server 2003 Service Pack 1, Windows Server 2003 Service Pack 1 for Itanium-based Systems, Windows Server 2003 Standard x64 Edition, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Service Pack 1, Windows XP Service Pack 2, Windows XP Tablet PC Edition

  • • Microsoft® Outlook® 2000, Microsoft® Outlook® XP, or Microsoft® Outlook® 2003 messaging and collaboration clients required for synchronization to the desktop or portable computer of e-mail, calendar, contacts, tasks, and notes. (Outlook 2003 is recommended)
    • Microsoft® Office 2000, Microsoft® Office XP or Microsoft® Office 2003
    • Microsoft® Internet Explorer 6.0 or later (required)
    • Microsoft® Systems Management Server 2.0

    The following mobile device operating systems are supported by ActiveSync 4.2:
    • 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® Windows® CE OS version 3.0
    • Microsoft® Smartphone 2002, Microsoft® Windows® CE OS version 3.0

Installation Instructions

  • 1. Install the ActiveSync setup software (7.0 MB) to your PC by clicking setup.exe below.
    2. Select Run and follow the instructions on the screen.

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