A user started the thread asking why the "Properties" option was missing from the taskbar context menu after upgrading to Windows 10 Pro. Another contributor explained that this option was replaced with "Settings" in the Anniversary Update (version 1607), which the user could verify with the "winver" command. The original poster then shared a solution related to adjusting the taskbar button size. The overall discussion centers around the change in taskbar options following Windows 10 updates.