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Troubleshooting ‘COM Class Factory’ Errors in Webgility Desktop and QuickBooks Desktop Integration

This article helps Webgility Desktop users fix the ‘COM Class Factory’ error encountered during integration between Webgility Desktop and QuickBooks Desktop, which usually indicates unstable application communication.

Step-by-Step Resolution

Step 1: Close Webgility and Scheduler on All Systems

  • Exit the Webgility Desktop application and Webgility Scheduler on all computers where it is running.

Step 2: Locate and Run the Webgility Merge Module

  1. Navigate to the Webgility installation folder: C:\Webgility\UnifyEnterprise

  2. Locate the WebgilityMergeModule.exe file.

  3. Run the installer:

    • Right-click and choose Run as administrator

    • This step registers required COM components for QuickBooks integration

  4. Important: If on an add-on computer, restart the computer after installation.

Step 3: Confirm Permissions and Account Settings and Test the Integration.

  1. Launch QuickBooks Desktop and Webgility Desktop (Run as administrator)

  2. In Webgility navigate to Connections, go to Accounting and click on Edit Connection.

  3. Re-try testing the connection by click on Test QuickBooks Connection.