In Windchill 10.2 M020, a new drag-and-drop upload functionality was introduced. This enhancement allowed users to upload content using drag-and-drop without requiring a Java plugin. Users who still wanted to use the Java drop target had the option of setting the File Upload Mechanism preference to Use Java applet functionality to select and upload files. Now, the Java target is no longer an option; instead, all drag-and-drop actions are supported through basic browser functionality.