A configuration script incorrectly checks the installed version of Java against version 1.8.0_40, causing cassadra not to run. The file affected is "apache-cassandra-3.7-bin.tar.gz", downloaded from the Cassandra download page. The error is in the file appache-cassandra-3.7/conf/cassandra-env.ps1 at line 416. The problem is with this check: $env:JVM_VERSION.CompareTo("1.8.0_40") -eq -1. It is comparing the versions as strings and not as numbers. This works up to java update 99, be fails after. It should instead compare each section of the version as numbers, perhaps individually.