Java WebStart and JNLP Apps Get 'SecurityException - class does not match trust level (or signer information) of other classes in the same package' (Doc ID 2168729.1)

Last updated on SEPTEMBER 14, 2016

Applies to:

Java SE JDK and JRE - Version 7 to 8
Information in this document applies to any platform.

Symptoms

After installing a recent Java SE 7 or 8 patch update on a Windows system, Java WebStart (JNLP) applications fail to start with the following error and stack trace: 

  

Changes

The described issues occur only in the following Java releases:

Java SE 8:

Java SE 7

Cause

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