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Unable to launch Workstation Webstart - com.sun.deploy.net.JARSigningException

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Article ID: 127038

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Updated On:

Products

CA Application Performance Management Agent (APM / Wily / Introscope) INTROSCOPE

Issue/Introduction

We have recently upgraded / deployed a 10.7 HOTFIX and now I get this error when trying to launch the webstart workstation. 


com.sun.deploy.net.JARSigningException: Found unsigned entry in resource: http://<em-hostname>:8081/workstationProduct/plugins/com.ca.apm.introscope.workstation.webstart.launcher_10.7.0.jar 
at com.sun.javaws.security.SigningInfo.getCommonCodeSignersForJar(Unknown Source) 
at com.sun.javaws.security.SigningInfo.check(Unknown Source) 
at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source) 


Cause

All our JARs are all signed but there was an incompatibility introduced by Sun/Oracle which makes the older JREs not recognize the signing algorithm.
See https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8049480

This is a known issue documented in docops
https://docops.ca.com/ca-apm/10-7/en/ca-apm-release-notes/known-issues/enterprise-manager-and-introscope-known-issues#EnterpriseManagerandIntroscopeKnownIssues-DefectDE395897-CannotLaunchWebStartWorkstation


 

Environment

APM 10.7

Resolution

Solution:
In the Client workstation, install:
-JRE 1.8.0_131 or higher
-JRE 1.7.0_80 or higher 

Workaround:
1.Download the workstation.jnlp, then run the JNLP manually from the command line with javaws workstation.jnlp from the <JRE_HOME>/bin directory

2.Install Workstation Standalone

Other suggestions:
Go to "Control Panel \ Java"

- Temporary Internet Files \ Settings:
a) Untick "Keep temporary files on my computer", or
b) Delete all existing Files, including "Installed Applications and Applets"

- Advanced:

Enable Java console