What occurs when double-clicking a .msi file?

Double-clicking a .msi file initiates the installation process for a software application. The .msi file format, which stands for Microsoft Installer, is specifically designed for installation of software on Windows operating systems. When you double-click an .msi file, the Windows Installer service is called into action, which then begins the process of installing the application contained within the .msi package. This process typically involves copying files, creating shortcuts, and modifying system settings as necessary for the application to run properly.

In contrast, the other options describe different actions that do not occur when interacting with an .msi file. Opening a document for editing is associated with file types such as .doc or .txt, while a virus scan is usually performed by security software and not triggered by executing an installation file. Lastly, creating a folder on the desktop is a separate action not linked to the execution of .msi files.