|By Chris De Herrera
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ActiveSync 3.x Troubleshooting Guide
By Chris De Herrera, Copyright 2001-2005
Version 1.38 Revised 10/23/2005
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Firewall and Proxy Issues
Information Server / Outlook Mobile Access
ActiveSync Error Codes and Solutions
Calendar, Contacts or Tasks Items
ActiveSync 4.x Troubleshooting
Guide - General
Troubleshooting Guide - Limitations
Troubleshooting Guide - 85010014
Troubleshooting Guide - Firewall, VPN, Proxy
Troubleshooting Guide - Logs & Services
Troubleshooting Guide - Connection Flow
Microsoft ActiveSync 4.2 Troubleshooting
ActiveSync 4.x and Visual Studio 2005 and the Emulator
Understanding ActiveSync or WMDC Partnerships
If you are unable to connect then try soft resetting
your Pocket PC, Handheld PC or Palm-size PC. Also, try rebooting
your PC with your Pocket PC, Handheld PC or Palm-size PC plugged in.
If you are unable to connect your Pocket PC, Handheld
PC, or Palm-size PC to your desktop, you may need to reinstall
If you are using Windows NT or Windows 2000 using the
Serial port and cannot connect. try this patch from
HP which forces ActiveSync to use Com1 and allows you to change the
port setting without connecting first. This patch works with all
versions of ActiveSync 3.x.
If you can't connect via a network connection
(Ethernet, RAS or 802.11b (Wi-Fi)) then try
to enter your desktop's IP address into the Pocket PC, or Handheld PC
If you are trying to connect using Bluetooth with your
Pocket PC, make sure you have configured the Bluetooth driver on your PC
to support the Bluetooth serial profile. The serial port listed in
the Bluetooth driver must be selected in ActiveSync to synchronize with
your Pocket PC. Also, if you are using the iPAQ 3870/3875/3970/3975
then you need to limit the speed of the Bluetooth connection on your PC to
115.2k baud. ActiveSync only supports virtual com ports 0 through 9
so if your driver installs a com port that is higher, you need to
re-assign it to a lower port number to select it. Note: The
Windows XP Bluetooth drivers do not support the Bluetooth Serial profile.
You must install the Bluetooth drivers from your Bluetooth Manufacturer in
order to sync.
If you are trying to sync via Bluetooth with the
FujitsuSiemens Loox, it does not support the serial profile. You
must use the PAN (Personal Area Network) profile on the Pocket PC and
select the Network option under ActiveSync. Further your Bluetooth
adapter on the desktop must support PAN for this to work. In
addition you must bond the Pocket PC and PC before trying to sync.
If you are unable to connect after a new installation
using Windows NT, 2000 or XP, did you install ActiveSync using the
Administrator account? If you did not then, uninstall ActiveSync and
login as the Administrator and install it again.
If you see "Microsoft exchange--There are no profiles.
Choose the Mail and Fax icon in the Control Panel to create a new
profile." you need to install Outlook or setup a profile to sync.
This will occur if you have freshly installed Outlook and not opened it as
well. If you do not have Outlook, and want to use Outlook
- If you are attempting to use a USB to serial adapter, you may not be
able to sync. Some USB to serial adapters are not supported with
ActiveSync. An example of a USB adapter that does not work is the
Targus Mobile Port Replicator - PA070U. See Microsoft KB article
- If you see an error when you reboot from ActiveSync and it says that
the Infrared or COM port you have selected is unavailable and you can
select and use that port after you boot. Modifying the registry is not
supported by Microsoft so do this at your own risk! Open REGEDIT
on the PC and confirm that there is a value for the key
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows CE Services\SerialPort which
refers to the port you want to use. Then rename the key
HKEY_CURRENT_USER\Software\Microsoft\Windows CE Services\SerialPort to
another name. Reboot and confirm that ActiveSync works correctly.
- If you want to choose another folder to sync on the PC other than
Pocket_PC My Documents, modify the registry key
Services\Partners\73491db6\Services\Synchronization where the partner id
73491db6 is always different for each partnership. Microsoft does
not support modifying the registry so do this at your own risk!
- If you have installed IMSecure from ZoneLabs, then you may not be able
to synchronize. Other users have reported removing IMSecure to use
If your problem is not resolved here, try the
Microsoft's Knowledge Base search on ActiveSync or
Microsoft's Knowledge Base search on Mobile Information Server.
Other Articles on ActiveSync:
ActiveSync 3.8 Review
ActiveSync 3.7 Review
ActiveSync 3.6 Review
ActiveSync 3.5 Review
ActiveSync 3.1 Review
ActiveSync 3.0 Review
ActiveSync - Identifying Unresolved
ActiveSync - Multiple Partnerships
ActiveSync - Using Categories to
Configuring Norton Internet Security
Removing ActiveSync 3.X
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