Apps like antivirus software, cloud storage (Dropbox, OneDrive), or VPNs live in the tray because they are constantly working but don't need a constant window open.
While they may seem like minor UI elements, tray icons are essential for multitasking, system monitoring, and streamlining your digital workflow. The Purpose of a Tray Icon what is a tray icon
If you notice an icon for an app you aren't using, right-click it and look for "Quit," "Exit," or "Close." This frees up RAM and CPU resources. Apps like antivirus software
Located in the Notification Area on the far right of the Taskbar. Because space is limited, Windows often hides less-active icons inside an "overflow" menu, accessible by clicking the upward-pointing arrow (wedge). cloud storage (Dropbox