Hi Lanie_umali,
It sems that you were automating Excel application using Excel PIAs. Would you mind sharing the code you were developing?
Also here is sample that demonstrates how to use Visual VB.NET codes to create a Microsoft Excel instance, create a workbook, fill data into a specific range, save the workbook, close the Microsoft Excel application and then clean up unmanaged
COM resources:
VB app automates Excel (VBAutomateExcel)
Regards & Fei
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