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In this section of the Billit website, you will find manuals and explanations about all the features in Billit. You can find help articles using the search function or through the menu structure on the left which follows the menu-structure in Billit.
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How do I connect my accounting software via BillSync?

⚠️ Important: This article is about the BillSync integration via the accountant portal. Are you an in-house accountant without access to the accountant portal? Then contact us via the Help button in the platform.

What is BillSync?

BillSync is a Windows service that you install on a PC or server. It takes care of the automatic synchronisation between Billit and your accounting software. With BillSync, you can:

  • Automatically download UBL, CODA and other files (such as reports or documents) to local folders.
  • For Expert/M and Adsolut, send additional data back to Billit, such as customers, suppliers, general ledger accounts and booking details (bidirectional integration).

Important if you are installing BillSync:

Are you installing BillSync yourself or having an IT partner do it?
Then make sure of the following:

  1. Create a (temporary) user via Settings > Users in the accountant portal for the person who will carry out the installation.
  2. Make sure you have access to the PC or server with administrator rights so that software can be installed.

  • BillSync: troubleshooting
    Down

    Common problems

    SymptomCause / solution
    Installer: "Could not download the required files..."No internet access, or an antivirus/firewall is blocking the Billit servers. Add the addresses below to the allowlist and try again.
    The installer keeps asking you to install .NET 4.8The .NET installation requires a restart. Restart the machine and run the installer again.
    The log file shows "BasePath not defined"No Document folder has been set yet. Open the BillSync window > Open configuration > the accountant's tab > fill in Document folder > Save.
    The Billit connection shows Inactive/OfflineThe link is missing or the platform cannot be reached. Click Connect with Billit to link it (again) and check the internet connection.
    No files appear in the foldersCheck that the service is Running, the connection is Active, and the path exists and is writable for the service account. For network shares, enter the network credentials in the configuration window.
    The platform shows "BillSync is not responding" during the database validationThe BillSync service is not running or is not connected. Start the service in the BillSync window and validate again.
    BillSync is not listed in Apps & featuresOld installation without a registry entry. Remove it with the wizard as described in Uninstalling BillSync.
    Windows shows the BillSync service as stopped after startupBoth services start automatically with a delay. Wait a few minutes. If the service stays stopped, start it manually and check the log files.

    Network requirements

    Allow outgoing HTTPS traffic (port 443) from the BillSync machine to:

    • my.billit.eu: installer downloads, program updates and version checks
    • my.billit.be: platform communication (BillSync web service)
    • api.billit.eu: Billit API

    For the integration with Adsolut or Expert/M, the machine also needs access to the SQL Server instance of the accounting software and, if the folders are on network shares, SMB access to those shares.

    Technical reference

    ComponentValue
    Default installation folderC:\Program Files (x86)\Billit\BillSync
    Main serviceBillSync (or BillSync<suffix>), program BillSyncService.exe, startup type Automatic (Delayed Start)
    Updater serviceBillSync<suffix>Updater, program BillSyncAutoUpdaterService.exe, startup type Automatic (Delayed Start)
    BillSync windowBillSyncFormClient.exe ("BillSync" shortcut)
    Configuration windowBillSyncConfig.exe (via "Open configuration")
    Uninstall/repair toolappalter.exe in the installation folder (options /uninstall, /repair, /modify)
    Local configurationconfig.json in the installation folder (only the connection details for Billit). Folder paths and synchronisation settings are stored in the Billit platform.
    Log files<installation folder>\Log\log-2-yyyy-MM-dd.log (one file per day, cleaned up automatically)

    Automatic updates

    • The updater service regularly checks whether a new version is available. Make sure the updater is enabled and running.
    • During an update, the main service is stopped cleanly and any open BillSync windows are closed. The update is then installed and the service restarted.
    • If BillSync has been running for more than 7 days, the updater restarts the service automatically.

    Still stuck? Contact our support team via the Help button at the bottom left of the platform and attach the most recent log file from the Log folder.

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