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Error in OpenConnectionBeginSession
Error in OpenConnectionBeginSession

For resolving an error referencing an OpenConnectionBeginSession when performing a synchronization.

Updated over a week ago

When doing a sync, the Method Integration Engine displays an error with reference to an OpenConnectionBeginSession and a ‘QBXML components have not been installed’.

The first line gives the following text: 'Warning: Error in OpenConnectionBeginSession.

After the message, there is a series of error lines after the message with reference to ‘QBXML components have not been installed’.


The key to the error is the "QBXML components have not been installed" message.  QuickBooks Online has provided some suggestions to resolve the issue on this link. Below are steps based on the article:

  1. Try updating QuickBooks with the latest updates.

  2. Rename the .tlg file.

  3. Close QuickBooks.

    • Right-click the Windows Start button and choose Open Windows Explorer.

    • In the left window, navigate to the following location:
      (If the file is not present, your company file is in another location)

      • Windows 7 and Vista:

        C:\Users\Public\Public Documents\Intuit\QuickBooks\Company Files\

      • Windows XP:

        C:\Documents and Settings\All Users\Documents\Intuit\QuickBooks\

    • Look for files ending in .tlg. Right-click each .tlg file and rename it. An example would be filename.tlg to filename.tlgold

    • Try the sync again.

  4. Uninstall and reinstall QuickBooks. You can also try uninstalling and reinstalling the Method Integration Engine.

  5. Check Permissions for the Method Integration Folder:

  6. This folder is hidden by default, you can unhide it by following these steps:

    • Organize > Folder and Search Option.

    • Click on the View tab.

    • Click on Show Hidden files, folder and drives.

  7. Right-click on Method Integration folder, Click Properties.

  8. Click on the Security tab.

  9. To allow the permission for the user, check the Allow checkbox for Full control that will enable all permissions for that folder.

  10. Click OK.


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