SecurityException during executing jnlp file Missing required Permissions manifest attribute in main jar

Question

OS  Windows 7 64 bit  Java  jdk1 7 0 51  I have a jnlp file  When I double click on this  exception is occurred as below   Application Error  Unable to launch the application Exception  java lang SecurityException  Missing required Permissions manifest attribute in main jar

User · Answer

If you d like to set this globally for all users of a machine  you can create the following directory and file structures   mkdir  windir  Sun Java Deployment   Create a file deployment config with the content   deployment system config file    c  windows Sun Java Deployment deployment properties deployment system config mandatory TRUE   Create a file deployment properties  deployment user security exception sites C   WINDOWS Sun Java Deployment exception sites   Create a file exception sites  http   example1 com http   example2 com path to specific directory    Reference https   blogs oracle com java-platform-group entry upcoming exception site list in

User · Answer

JAR File Manifest Attributes for Security  The JAR file manifest contains information about the contents of the JAR file  including security and configuration information    Add the attributes to the manifest before the JAR file is signed  See Modifying a Manifest File in the Java Tutorial for information on adding attributes to the JAR manifest file   Permissions Attribute  The Permissions attribute is used to verify that the permissions level requested by the RIA when it runs matches the permissions level that was set when the JAR file was created   Use this attribute to help prevent someone from re-deploying an application that is signed with your certificate and running it at a different privilege level  Set this attribute to one of the following values    sandbox - runs in the security sandbox and does not require additional permissions  all-permissions - requires access to the user s system resources    Changes to Security Slider   The following changes to Security Slider were included in this release 7u51     Block Self-Signed and Unsigned applets on High Security Setting Require Permissions Attribute for High Security Setting Warn users of missing Permissions Attributes for Medium Security Setting   For more information  see Java Control Panel documentation     sample MANIFEST MF  Manifest-Version  1 0 Ant-Version  Apache Ant 1 8 3 Created-By  1 7 0 51-b13  Oracle Corporation  Trusted-Only  true Class-Path  lib plugin jar Permissions  sandbox Codebase  http   myweb de http   www myweb de Application-Name  summary-applet

[java] SecurityException during executing jnlp file (Missing required Permissions manifest attribute in main jar)

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