While many users find the Click-to-Run feature helpful as they can edit documents, presentations, Excel sheets right away while the download and installation process continues in the background, some have complaints and concerns as the service is always running in the background and slowing down the PC. Click-to-Run uses a streaming and virtualization technology that allows users to use Office programs even before they are installed on your Windows computer. The Click-to-Run feature in the Microsoft Office product suite is an auto-update service that aims to provide a hassle-free office installation experience for most versions of Office 2013 and newer.