It’s likely that the installation is being halted by the Windows UAC (User Account Control) verification window that pops up during most software installs.
This is a security prompt from Windows that wants the user to verify the installation. However, this prompt often comes up in the background, not making itself very clear to the user. Windows requires that the user acknowledge the prompt before proceeding with the installation. As a result, the installation will be paused until the UAC is passed.
In order to find the UAC window, you can either click through or minimize any open windows; or you can look at your Taskbar and locate an icon (it may be flashing) that looks like a shield. Once you’ve located it, simply acknowledge that you would like to continue with the install and you should be set.