Our installer uses InstallAnywhere 2021 and is failing w/ this error in the install log ========= Forking JAVA ============================================= JRE libraries are missing or not compatible.... Exiting.... ========= JAVA Finished ============================================= We tried setting IATEMPDIR per this technote - https://community.flexera.com/t5/Code-Insight-Knowledge-Base/JRE-libraries-are-missing-or-not-compatible-error-during-FlexNet/ta-p/107568 - but the issue remains unresolved.  I am not sure if IA 2021 uses this IATEMPDIR environment variable. The default TEMP directory has lot of space and is writeable by the installing user - so we actually don't need to specify an alternate TEMP directory. I also found that java.exe cannot be launched by the userID that runs the installer - So could this error occur if the java.exe used by the installer is not executable by the userID launching the installer?  I tried specifying  lax.nl.java.option.verbose=all lax.nl.java.option.debugging=on in the LAX properties file, but there is no debug data being written that can explain why 'forking Java' operation failed. The failure occurs, even when LAX_VM command line parameter is used to specify an alternate JVM.   ... View more