How to Fix Error 1603: Fatal error during installation (Windows)
While installing Microsoft Windows Installer package, some users may have faced the error message Error 1603: Fatal error during installation. If you click OK then the installation rolls back. Cause of Error 1603: Fatal error during installation 1. If Windows installer tries to install an app that is already installed on your computer then … Read more How to Fix Error 1603: Fatal error during installation (Windows)