18872 Rate this article: 5.0 JRE Locations on Windows 64-bit Systems The IDL and ENVI Help System, along with the IDL Workbench, require 32-bit JRE's to operate properly. Windows 64-bit systems are able to utilize 32-bit and 64-bit JRE's keeping them in separate locations for system clarity. Installing the 32-bit JRE on a 64-bit Windows system is straight forward. You need to know where the files are being downloaded in order to access them and this is not always clear during the installation process. All of the 64-bit programs are installed in the Program Files directory, easily accessible using Windows Explorer. Look for the Java directory within Program Files and you will find all of the 64-bit Java packages that are installed located there. They will be listed by name. All of the 32-bit programs are installed in the Program Files (x86) directory, easily accessible using Windows Explorer. Look for the Java directory within Program Files (x86) and you will find all of the 32-bit Java packages that are installed located there. They will be listed by name. Please login or register to post comments. Migrating IDL Workbench Project folders (7.0 and later) into a new or reset IDL workspace folder IDL 7.0.6 and ENVI+IDL 4.6/4.6.1 Workbench will not launch (Java dependency issue)