ProTee Interface reports COM Port already in use or the sensor mat is not responding even when the COM Port is set correctly

Open the Windows Device manager. Look for the Mice and other pointing devices section. If you find a Mircosoft Serial BallPoint it needs to be disabled.

Right mouse click the Microsoft Serial BallPoint and choose to Disable.

When disabled Windows will free up the COM Port and show a small arrow in the Mouse icon.


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