Uninstall Uninstall[link] terminates an external program started by Install, and removes Mathematica definitions set up by it. The argument of Uninstall is a LinkObject representing a MathLink link as returned by Install. Uninstall calls Unset to remove definitions set up by Install. See the Mathematica book: Section 1.11.11, Section 2.12.2. See also: Install, LinkClose, Close.