Tried to load the admin web page for an EqualLogic PS 6100 series array and got

attempted to open sandboxed jar

The fix requires editing the java.security file and removing MD5 from the following line

jdk.jar.disabledAlgorithms=MD2, RSA keySize < 1024, DSA keySize < 1024

Open the Java control panel to find the path to the Java version your browser is using.

http://tech.lazyllama.com/2017/05/19/workaround-for-java-8u131-attempted-to-open-sandboxed-jar-xxxxx-as-a-trusted-library-error/