RunPCCommand Java Applet Java 7.45

[brett.elston]

Hi,

I the past with Java version 7.25 we experienced a problem with this applet where we were running executables. This was resolved by either re-installing Java 7.25 or installing a later update in most cases 7.45. All of a sudden this problem has re-appeared, please see attachment. Now at the risk of sounding like a true user, to the best of our knowledge, nothing has changed. Now I say this tongue-in-cheek because something obviously has, but I do not know how to establish what that is? This error has now appeared on my own machine, which I know for a fact I have prevented from updating to 7.51 as everything was working. According to infrastructure the only update that is performed automatically is the virus checker which, is Microsoft Forfront, so a possible cause. Other Microsoft automatic updates are disabled.

Any help that you can give us would be much appreciated. All of our users use Profoundui as a gateway to one of our main systems that is accessed via this RunCommand. This means we have a company at near standstill at the moment.

Thanks in advance.

[brett.elston]

SOLUTION

Ok for lack of a better word here is a "fix" should you encounter this problem:-

1. Access Control Panel.
2. Go to the Java Control Panel.
3. Select the Java security tab.
4. Uncheck the "Enable Java in Browser" check box.
5. Change security level to medium.
6. Save and Apply.
7. Re-boot PC.
8. Go back to the Java control panel and re-check the "Enable Java in browser" check box.
9. Re-boot PC.

It should now work. Unfortunately we still have no idea why this fixes things and it is a product of many people frantically trying everything possible, a million monkeys and we got Shakespeare..

[David]

Sorry for the trouble here, I'm not sure why all of that would be necessary, but I'm glad it seems to work for you. If this helps...

With Java 7u45, Oracle 'moved the goal' again in terms of what requirements an applet must meet to be deemed 'secure'. Unfortunately, they did this in such a way that as of 7u45 it was not possible to create an applet that avoids extra security prompts in both 7u45 and earlier versions of Java due to a bug.

Profound UI 4.7.1 includes a version of the applet that meets all the latest requirements, but may have difficulties running on older versions due to the changes from Oracle. So, we do recommend that any uses of our applet are using Profound UI 4.7.1 and Java 7u45 at minimum.

We have also tested with 7u51 (now available), and everything looks ok with our current release.

In our testing, everything works fine with the 'High' security setting in the Java control panel. Our applet cannot run with the 'Very High' setting, as it uses calls from JavaScript to the Java code in the applet, and this is not allowed under 'Very High'.

We have had many reports (and found this in our own testing, as well), that it's common for some reason that the Java plug-in stops working entirely after an update. Meaning that it won't run ANY applets in the browser, including the 'version check' applet on www.java.com.

In this case, we've found it necessary to uninstall Java, do a clean install, and then reboot before it will run any applets.