Frequently asked questions (FAQs)

Review common questions and answers about Open Web Launch.

Are there 32 and 64-bit versions available?

Both versions are installed by default (openweblaunch32.exe and openweblaunch64.exe). Based on the Java Virtual Machine selected, the setup will make the 32 or 64-bit version of Open Web Launch the default (openweblaunch.exe).

What happens if a JNLP file on the host changes?

Open Web Launch will check for changes between remote and local JNLP files and will refresh where needed.

How does Open Web Launch determine the Java it should use?

Open Web Launch uses the following order when determining what Java executable it will use to run a Java Web Start application:
  1. Command line options. When -javaDir <java_folder> is specified, Java installation from <java_folder> will be used.
  2. JAVA_HOME. Open Web Launch will use the JAVA_HOME environment variable to locate the version of Java it should use if this option was selected during setup.
  3. Registry. Open Web Launch will use a specific version of Java if this option was indicated during setup.
  4. Path. If none of the other options result in a Java version that it can use, Open Web Launch will try to locate Java on the PATH.