Java JRE not working on any PC

Hello!

I have a customer, where none of the PC's og the servers can use Java JRE applications on the internet.

I have checked and double checked all settings in the Java Control Panel and Checked it is enabled for IE. I have tried Firefox and Opera too. I have uninstalled and installed several older versions, without any luck...

Now im running on the latest 1.6.0.02.

Im running behind a SBS 2003, without the ISA enabled. All PC's are using the router directly as default gateway (so not running through the SBS server). Im not using any Proxy, but i have tried that as well.

Java control Panel is set to use Default browser settings.

I have no idea what can cause this, and maybe im not filling in enough information for you, so please ask questions and ill answer as good as i can.

Here is the log when i try to test the Java on internet Java applications.

======================================

Java Plug-in 1.6.0_02

Using JRE version 1.6.0_02 Java HotSpot(TM) Client VM

User home directory = C:\Documents and Settings\ivar

-

c:clear console window

f:finalize objects on finalization queue

g:garbage collect

h:display this help message

l:dump classloader list

m:print memory usage

o:trigger logging

p:reload proxy configuration

q:hide console

r:reload policy configuration

s:dump system and deployment properties

t:dump thread list

v:dump thread stack

x:clear classloader cache

0-5: set trace level to <n>

-

load: class JavaVersionDisplayApplet.class not found.

java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class

at sun.applet.AppletClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.applet.AppletClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.applet.AppletClassLoader.loadCode(Unknown Source)

at sun.applet.AppletPanel.createApplet(Unknown Source)

at sun.plugin.AppletViewer.createApplet(Unknown Source)

at sun.applet.AppletPanel.runLoader(Unknown Source)

at sun.applet.AppletPanel.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

Caused by: java.io.IOException: open HTTP connection failed.

at sun.applet.AppletClassLoader.getBytes(Unknown Source)

at sun.applet.AppletClassLoader.access$100(Unknown Source)

at sun.applet.AppletClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

... 10 more

load: class JavaVersionDisplayApplet.class not found.

java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class

at sun.applet.AppletClassLoader.findClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.applet.AppletClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at sun.applet.AppletClassLoader.loadCode(Unknown Source)

at sun.applet.AppletPanel.createApplet(Unknown Source)

at sun.plugin.AppletViewer.createApplet(Unknown Source)

at sun.applet.AppletPanel.runLoader(Unknown Source)

at sun.applet.AppletPanel.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

Caused by: java.io.IOException: open HTTP connection failed.

at sun.applet.AppletClassLoader.getBytes(Unknown Source)

at sun.applet.AppletClassLoader.access$100(Unknown Source)

at sun.applet.AppletClassLoader$1.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

... 10 more

=============================================

I have the feeling this has something to do with java not finding the java application it is trying to run? Does this make any sense? BTW. The Java Control Panel is showing in the taskbar next to the clock when i enter a Java site so its launching Java, but nothing happens.

Is there any simple java application i can use to test locally? From my C: drive or something.

I do not know much about Java functionality so i appreciate any help.

Thanks

Espen Zaal, Norway

[4254 byte] By [lurera] at [2007-11-27 11:58:35]
# 1

If you installed the demonstration programs when you installed the JDK, then you have a group of applets in the JDK install directory, typically at

C:\Program Files\Java\jdk1.6.0_02\demo\applets

The same applets can also be accessed at Sun's website, here:

http://java.sun.com/applets/jdk/1.4/index.html

You can try executing the same applet from both locations and see what happens.

The error that you are seeing usually means that there is a connection problem to the remote computer, or that the remote computer is not configured correctly.

ChuckBinga at 2007-7-29 19:20:35 > top of Java-index,Desktop,Runtime Environment...
# 2

Hey, thanks for the answer.

I didnt have the JDK installed, just JRE so i installed JDK and could run the local applets.

The same online applet fails. I really do not know why this happens. There is nothing fancy about this customers network. They have 5 users, and a single Cisco Router for router/firewall for connecting/protecting against the internet.

There is also no outgoing firewall. Does anyone have experience with firewalls or routers blocking some part of the traffic? I just had a problem with the MTU at a nother customer.

Last time i investigated this i also concluded that there was no connection to the remote computer as you suggest, but i can not see what is blocking it.

The customer of mine is realying on Java to run for one of their applications so i can not "quit" like i did last time when the managing director couldnt play his online games hehe.

Anyone else got some tips?

Thanks

lurera at 2007-7-29 19:20:35 > top of Java-index,Desktop,Runtime Environment...
# 3

Try bypassing everything between you and the net connection; failing that, get out the router/firewall/etc manuals or hire someone.

If you're familar with the protocols, you could try a packet sniffer.

ChuckBinga at 2007-7-29 19:20:35 > top of Java-index,Desktop,Runtime Environment...
# 4

Yes, it has been my thought long time ago, but the only thing between the clients and internet is this one router, and i need the ISP to reconfigure it as a modem so i can put a new router behind it.

I was hoping to avoid this, but it seems to be the next step.

I will ask them if they are willing to take the cost of a new router to do this. I dont see they have a choice.

I know ill be putting another box in the line, but if i disable all firewall and router functionality on the Cisco i can put on a router on the inside which i know how to configure and that i know is not blocking anything.

Thanks, i will try this out, but if you have anything else also let me know.

lurera at 2007-7-29 19:20:35 > top of Java-index,Desktop,Runtime Environment...