The most common cause is that specific segments are temporarily or permanently offline/broken on the host server.
The "Segment Not Loaded Exclusive" error in JDDownloader can be frustrating, but it can usually be resolved by trying one of the above solutions. While JDDownloader is a reliable download manager, errors like this can occur. The developers of JDDownloader provide regular updates and support, which helps to minimize such issues. jdownloader segment not loaded exclusive