Double-Click, Single-Click Posted on August 27, 2010 by Super A question we get asked often is how to know when to single-click and when to double-click. Unfortunately, there’s not a lot of logic to it. You kind of just have to know. And settings can be changed in Windows to change it. But most people don’t know about these settings, so here are the rules for Windows with the default settings. Icons on the Windows desktop should be double-clicked. Icons in the Quick-launch bar (XP or Vista), or on the Windows 7 task bar should be single-clicked. Anything on the web should be single-clicked. When you are in Windows Explorer looking at files on your computer, if you want to open one of these files, you would double-click on it.