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A black rectangle appears on my custom taskpane of my COM AddIn

Srivastava, Amit 0 Reputation points
2024-11-21T17:24:27.01+00:00

A black rectangle or square appears for a brief time on my custom taskpane of my COM AddIn when taskpane is shown on the Excel. It also appears when closing the Excel

Office Development
Office Development
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Development: The process of researching, productizing, and refining new or existing technologies.
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