How to Synchronize with multiple Exchange Servers

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Written by Support InfoBridge


In this article we explain how to setup the Exchange Online Synchronizer for synchronizing with multiple Exchange servers.

How to:

Begin by creating new shortcuts for the Exchange Online Synchronizer admin. Create a shortcut for each Exchange server.
The Exchange Online Synchronizer Admin needs to be started with extra parameters in the start command of the shortcut. The parameters to use are /RANKED and /S<n> (Where <n> stands for the server number, e.g.: /S1)

"C:\Program Files (x86)\InfoBridge\Exchange Online Synchronizer\InfoBridge Synchronizer Administrator.exe" /RANKED /S1

The moment you start the Exchange Online Synchronizer admin a new folder is created in your local user folder. This folder will hold the logfiles and the service options. A separate folder for each rank is created.

C:\Users\syncuser\AppData\Roaming\InfoBridge SuperOffice Exchange Synchronizer EWS-0001

Technical Settings 

Go to the Technical settings after starting the Exchange Online Synchronizer admin. Here you can add multiple Exchange servers.


Click on ‘Add’ to add a new Exchange Server. Specify a server rank for each new added Exchange Server. The rank number corresponds with the /S value in the shortcut.


User Synchronization Settings

To be able to link a SuperOffice user to his External mailbox name you have to retrieve the users by clicking on the ‘Load External Users’ button in the User Synchronization Panel.


In the pop-up screen you will see all the Exchange servers you added in the Technical Settings. Now you can choose to load all users from all servers. Or you can select one server.
This will populate the External mailbox name list and you will now be able to link the users.

Service options

In the Service Options panel you have to set the correct Server rank id. This is the same number you use in the /S parameter and in the Technical Settings.
The information from the Service Options is saved in your local user folder, e.g.: C:\Users\syncuser\AppData\Roaming\InfoBridge SuperOffice Exchange Synchronizer EWS-0001
The file is saved as ‘service.ini’

More information on the file ‘service.ini’ and the different parameter options in the file, please see this knowledge base article:

To further configure the Exchange Online Synchronizer admin please use the User Manual which can be downloaded from:


During the installation of the Exchange Online Synchronizer one service is installed.

To create another Service copy the file ‘Install Extra Service.cmd’ from the Prerequisites folder to the Exchange Online Synchronizer folder and run the command file to create another service.

After the extra service is created, new parameters need to be added to the services in the registry.
In the registry go to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services

Select the InfoBridge Synchronizer Service and open the ImagePath.
In the Value Data field add the parameter /S<n>


Once the parameters have been added to all the services you are ready to start the Exchange Online Synchronizer.

If you want to run the Exchange Online Synchronizer program, you will also need to add the /S<n> parameter to the startcommand of the shortcut.
You can only run one instance at the time when running the Synchronizer as a program.
When using the services you can run all services at the same time.