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How to resolve connectivity problems between computers using CodeTwo Outlook Sync

Problem:

How to resolve connectivity problems between computers using CodeTwo Outlook Sync

Solution:

Most frequent communication problems with CodeTwo Outlook Sync are caused by network problems, which make it impossible to establish a connection between two machines. Most problems can be solved by following the clues below:

  1. Make sure the computers are in the same network
  2. Try adding the computers to the same workgroup
  3. Try enabling Network discovery and File sharing is turned on
  4. Change the number of port if they are used by other programs
  5. Check if the same TCP/IP ports are configured in both applications
  6. Check if TCP/IP ports are not blocked by a firewall and/or an antivirus software

Connect the computers on the same network

In order to check whether there is a network connection between two computer eqiupped with CodeTwo Outlook Sync, use the "ping" command:

  1. In the Windows Start menu choose Run and enter the following command:

    cmd
  2. The command prompt will launch. Type the following command:

    ping <remote_computer_name>

    where

    <remote_computer_name>

    is the name of the second machine equipped with CodeTwo Outlook Sync. For example, if the second computer is named DESKTOP-PC and you check the connection to it, type the following command:

    ping DESKTOP-PC

If you don't have problems establishing a connection with the DESKTOP-PC computer, the response should look as in (Fig. 1). Otherwise, you will receive an error message, e.g. "Request timed out" or "Ping request could not find host DESKTOP-PC. Please check the name and try again" or another error message.

504
Fig. 1. Checking connection with a remote computer using the "ping" command.

The "ping" command can be used to check the IP address of the remote computer. It is provided in the XXX.XXX.XXX.XXX format. The IP address can be used instead of the computer name to connect to the remote machine in CodeTwo Outlook Sync. If you are unsuccessful with resolving the IP address using the 'ping' command, try typing 'ipconfig' (without the inverted commas) in the command line prompt of the remote machine in order to learn the IP address that will be provided next to IPv4 Address.

If this command proves there is no connection between the computers, go to the next step below.

Add the computers to the same workgroup

It is not obligatory but if you are having issues connecting, it is recommended to add the computers to the same workgroup. To add a computer to a workgroup, click Start, Control Panel, System, go to the Computer Name tab and click the Change button.

424
Fig. 2. The computers must be in the same network.

In the Member of section of the window select the Workgroup field and type the name of the workgroup. Approve by clicking OK. You need to make sure both computers are located in the same workgroup.

Network discovery and file sharing must be turned on

In case of problems connecting it is also recommended to turn on some network features in Windows on such as Network Discovery and File Sharing if you have not done it when creating the network.

In order to turn on Network Discovery and File Sharing, click Start, Control Panel, Network and Internet, Network and Sharing Center, change Advanced Sharing Settings, and use the expand buttons to view and toggle on the Network discovery as well as File and printer sharing options. Click the link to learn more about troubleshooting network problems in your home network.

427
Fig. 3. Network discovery and file sharing must be enabled.

In order to unblock File and Printer Sharing in Windows XP firewall, go to Control Panel, Windows Firewall, and in the Exceptions tab select the File and Printer Sharing as shown below.

465
Fig. 4. Enable File and Printer Sharing in Windows XP firewall.

After you complete these steps and you still cannot connect the two applications, make sure to restart both machines and reopen the applications on both machines before trying to establish the connection.

Change the number of ports if they are used by other programs

If the following error appears in the log of CodeTwo Outlook Sync:

"Only one usage of each socket address (protocol/network address/port) is normally permitted (0x2740)"

it means that TCP port used by CodeTwo Outlook Sync for communication (the default port number is 5998) is being used by another program on the same computer. In that case, the number of communication port used by the program need to be changed. The port can be changed in the Settings of the program.

Check if the same TCP/IP ports are configured in both applications

Communication between installations of CodeTwo Outlook Sync is done via TCP/IP protocol with the use of port number defined in the program, which defaults to 5998. Make sure that the port number specified both applications is the same. The port used by the program can be viewed in the Settings of the program.

Check if TCP/IP ports are not blocked by a firewall and/or an antivirus software

If an antivirus software and/or a firewall (e.g. Norton Internet Security) is installed on a computer with CodeTwo Outlook Sync, check if it does not block the TCP port used by the program (default: 5998). In order to check that, try switching off your antivirus software and/or a firewall temporarily to try establishing a connection.

  • Applies to: CodeTwo Outlook Sync
  • Categories: Troubleshooting
  • Last modified: 2015-01-09
  • Created: 2011-08-05
  • ID: 191
  • Keywords: network, file sharing, sync, Outlook, view computers, visible, workgroup, hosts file, hosts, local network, discovery, IPaddress, share, computer name, DNS, WINS, network adapter
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