Context

You want to remove the Highlight application from your computer. This process requires ensuring the application is completely closed before attempting to uninstall it.

Answer

To successfully uninstall Highlight, follow these steps:

1. Close the application completely: Make sure Highlight is fully quit by closing it from both the dock (bottom of screen) and the menu bar (top of screen). Right-click on the Highlight icon in either location and select "Quit".

2. Uninstall the application: Once the app is completely closed, you can uninstall it using your normal method - typically by dragging the application to the trash can.

See here for more platform specific instructions - Uninstall Guide

Important: The most common reason uninstallation fails is because the application is still running in the background. Always ensure Highlight is completely quit before attempting to remove it.