Files with jpgenx extension are JPEG images (.jpg, .jpeg) that were previously encrypted using in Egis security software. The only way to recover the images is to use the EgisTec Protection Suite, or some successor product that still capable of opening .jpgenx files. It is likely that you will need proper credentials (password) to recover the files, i.e. essentially convert jpgenx to jpg.
Open JPGENX file Open JPG file