How do you reinsall iTunes?

To reinstall iTunes, first, uninstall the current version by going to Control Panel > Programs > Programs and Features (on Windows) or dragging the iTunes app to the Trash (on macOS). Next, download the latest version of iTunes from the Apple website. After the download is complete, run the installer and follow the prompts to complete the installation. Finally, reopen iTunes and restore your library from backups if necessary.