They need to insert their registries, add their application’s folder to your computer core files as well as access some important files to carry out the installation. Many programs require administrator privileges to complete the installation on your computer. Start with the first one and work your way down accordingly. We have listed all the workarounds present for this error. If there are some missing files, the installer stops its operation and prompts you that a specific file was missing from your computer. If all of them are available, the installer proceeds with the installation of the software without any hindrance. Whenever an application is being installed on your computer, all the components to be installed are first checked. The error particularly emerged after the version of iTunes was updated as well as the version of the Windows operating system. This error occurs due to a number of different reasons. The error “Apple application support was not found” usually occurs when the iTunes installer fails to complete its installation because it was either unable to access all the install files or they were not available in the installation package.