title: Some users gets Security Exception: Attempted to to open a sandboxed jar as a Trusted-Library
body: <p>We use applet on our application login page. Applet contains 2 classes. Jar is signed (ca certificate). Manifest file contains: "Trusted-Library: true.</p>
  
  <p>It works for most of the users but some of them have problems with applet because JVM report Security Exception: Attempted to to open a sandboxed jar as a Trusted-Library. </p>
  
  <p>Have you any idea why it wont work for them?</p>
  
  <p>For exaple User1 has Java Plug-in 10.21.2.11
  JRE version 1.7.0_21-b11 Java HotSpot(TM) Client VM. He try Firefox 21 and IE 8.0.6001.18702.</p>
  
  <p>JVM report General Exception:</p>
  
  <pre><code>basic: Plugin2ClassLoader.addURL parent called for 
  
  https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar
  basic: Plugin2ClassLoader.addURL parent called for 
  
  https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar
  
  security: Accessing keys and certificate in Mozilla user profile: null
  security: JSS is not configured
  security: Blacklist revocation check is enabled
  security: blacklist: created: NEED_LOAD, lastModified: 1374827364000
  security: blacklist: hasBeenModifiedSince 1374827396921 (we have 1374827364000)
  security: Trusted libraries list check is enabled
  security: blacklist: hasBeenModifiedSince 1374827583375 (we have 1374827364000)
  network: Cache entry found [url: https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar, version: null] prevalidated=false/0
  cache: Adding MemoryCache entry: https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar
  cache: Resource https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar has expired.
  network: Connecting https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar with proxy=DIRECT
  security: blacklist: hasBeenModifiedSince 1374827435937 (we have 1374827364000)
  security: blacklist: hasBeenModifiedSince 1374827390640 (we have 1374827364000)
  security: blacklist: hasBeenModifiedSince 1374827583375 (we have 1374827364000)
  network: CleanupThread used 268961 us
  network: Connecting http://www.sod.pfron.org.pl:443/ with proxy=DIRECT
  security: Loading Root CA certificates from C:\Program Files\Java\jre1.7.0_21\lib\security\cacerts
  security: Loaded Root CA certificates from C:\Program Files\Java\jre1.7.0_21\lib\security\cacerts
  security: Loading SSL Root CA certificates from C:\Program Files\Java\jre1.7.0_21\lib\security\cacerts
  security: Loaded SSL Root CA certificates from C:\Program Files\Java\jre1.7.0_21\lib\security\cacerts
  security: Loading Deployment SSL certificates from C:\Documents and Settings\Marek\Dane aplikacji\Sun\Java\Deployment\security\trusted.jssecerts
  security: Loaded Deployment SSL certificates from C:\Documents and Settings\Marek\Dane aplikacji\Sun\Java\Deployment\security\trusted.jssecerts
  security: Loading certificates from Deployment session certificate store
  security: Loaded certificates from Deployment session certificate store
  security: Checking if SSL certificate is in Deployment permanent certificate store
  security: Check if certificate can be verified using certificates in Root CA certificate store
  security: Certificate to be verified:
  [
  &lt;.....&gt;
  ]
  security: Certificate has been verified with Root CA certificates successfully
  security: Invalid certificate from HTTPS server
  basic: Dialog type is not candidate for embedding
  security: Saving certificates in Deployment session certificate store
  security: Saved certificates in Deployment session certificate store
  network: ResponseCode for https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar : 304
  network: Encoding for https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar : null
  network: Disconnect connection to https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar
  cache: Reading Signers from 3935 https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar | C:\Documents and Settings\Marek\Ustawienia lokalne\Dane aplikacji\Sun\Java\Deployment\cache\6.0\60\6283407c-46587e7d.idx
  cache: Done readSigners(https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar)
  cache:  Read manifest for https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar: read=273 full=273
  basic: Plugin2ClassLoader.isTrustedByPolicy called 
  basic: Plugin2ClassLoader.isTrustedByPolicy returns false 
  security: resource name "pl/computerland/sod/prezentacja/klient/cienki/applet/JavaVersion.class" in https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar : java.lang.SecurityException: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library
  security: resource name "pl/computerland/sod/prezentacja/klient/cienki/applet/JavaVersion.class" in https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar : java.lang.SecurityException: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library
  basic: exception: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library.
  java.lang.SecurityException: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library
      at com.sun.deploy.security.CPCallbackHandler$ParentElement.checkResource(Unknown Source)
      at com.sun.deploy.security.DeployURLClassPath$JarLoader.checkResource(Unknown Source)
      at com.sun.deploy.security.DeployURLClassPath$JarLoader.getResource(Unknown Source)
      at com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
  Ignored exception: java.lang.SecurityException: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library
  basic: exception: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library.
  java.lang.SecurityException: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library
      at com.sun.deploy.security.CPCallbackHandler$ParentElement.checkResource(Unknown Source)
      at com.sun.deploy.security.DeployURLClassPath$JarLoader.checkResource(Unknown Source)
      at com.sun.deploy.security.DeployURLClassPath$JarLoader.getResource(Unknown Source)
      at com.sun.deploy.security.DeployURLClassPath.getResource(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader$2.run(Unknown Source)
      at java.security.AccessController.doPrivileged(Native Method)
      at sun.plugin2.applet.Plugin2ClassLoader.findClassHelper(Unknown Source)
      at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
      at java.lang.ClassLoader.loadClass(Unknown Source)
      at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager.initAppletAdapter(Unknown Source)
      at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
      at java.lang.Thread.run(Unknown Source)
  Ignored exception: java.lang.SecurityException: attempted to open sandboxed jar https://www.sod.pfron.org.pl/_applet/Logowanie_8.32.2.48.jar as a Trusted-Library
  basic: Dialog type is not candidate for embedding
  basic: Dialog type is not candidate for embedding
  basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@5dcf43
  security: Reset deny session certificate store
  basic: Removed progress listener: sun.plugin.util.ProgressMonitorAdapter@1b93cf8
  security: Reset deny session certificate store
  </code></pre>