Launching/running the application

Question

Hi,
A collegue of me has a clean machine with no JWS. I told him to first install JWS from the sun site http://java.sun.com/products/javawebstart/download-windows.html the 8.6 MB international version.
After this was done he tried to start-up my application and he got the following exception when JWS was retrieving the latest JRE:
An error occurred while launching/running the application.
Title: J2RE 1.4.0 Installer (US)
Vendor: Sun Microsystems, Inc.
Category: Security Error
Unsigned application requesting unrestricted access to system
----8<------------------
<?xml version="1.0" encoding="utf-8"?>
<jnlp codebase="http://dlres.java.sun.com/servlet/com.sun.jsc.javasoft.jaws.JNLPServlet/j2se">
<information>
<title>J2RE 1.4.0 Installer (US)</title>
<vendor>Sun Microsystems, Inc.</vendor>
</information>
<security>
<all-permissions/>
</security>
<resources>
<j2se version="1.3+" href="http://java.sun.com/products/autodl/j2se"/>
<jar href="javaws-1_0_1-j2re-1_4_0-inst-win.jar" />
<jar href="javaws-1_0_1-j2re-1_4_0-data-win.jar" download="lazy"/>
<property name="javaVersion" value="1.4.0"/>
<property name="installerLocation" value="javaws-1_0_1-j2re-1_4_0-data-win.jar"/>
<property name="installerEntry" value="jre.dat"/>
<property name="licenseEntry" value="LICENSE"/>
<property name="lib" value="j2re-installer"/>
<property name="msvcrt.versionMS" value="60000"/>
<property name="msvcrt.versionLS" value="20910000"/>
<property name="execString" value="{0} -s -a -s -f1{1}"/>
<property name="javaPath" value="bin\\javaw.exe"/>
<property name="verbose" value="true"/>
<property name="merlin" value="true"/>
<property name="isWindowsInstall" value="true"/>
<nativelib href="javaws-1_0_1-j2re-1_4_0-native-win.jar" />
</resources>
<installer-desc main-class="com.sun.javaws.installers.Main"/>
</jnlp>
----8<------------------
JNLPException[category: Security Error : Exception: null : LaunchDesc: null ]
     at com.sun.javaws.LaunchDownload.checkSignedResourcesHelper(Unknown Source)
     at com.sun.javaws.LaunchDownload.checkSignedResources(Unknown Source)
     at com.sun.javaws.Launcher.continueLaunch(Unknown Source)
     at com.sun.javaws.Launcher.handleApplicationDesc(Unknown Source)
     at com.sun.javaws.Launcher.handleLaunchFile(Unknown Source)
     at com.sun.javaws.Launcher.run(Unknown Source)
Anyone any ideas
Thanks

Answer 1

I am having the same problem. My users first download web start (not the beta) from http://java.sun.com/cgi-bin/javawebstart-platform.sh? (which forwards to the windows installer page for windows users). That goes fine, and installs java 1.3.1 and JWS. However, my app requires java 1.4.0, so Web Start tries to auto-install the upgrade and gets the error pasted below.
It looks like Sun's installer JAR isn't signed? Any ideas?
An error occurred while launching/running the application.
Title: J2RE 1.4.0 Installer (US)
Vendor: Sun Microsystems, Inc.
Category: Security Error
Unsigned application requesting unrestricted access to system
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