Java applet authentication

Question

I have an applet hosted in a webserver and since I installed Java 6 update 24, a window is shown asking for Network Credentials every time I open the page.
If I access it from a computer with an older Java version, it runs the applet without asking the credentials.
I'm using integrated authentication so, I don't want to ask any credentials as the user is already authenticated by the OS.
Does anyone can help me?

Answer 1

i found the Bug listed for this issue, but they claim the fix mentioned in this thread doesn't fix the problem. yet for most if not all of us... it does:
Bug 6936012: In Microsoft Internet Explorer Java Plug-In re-challenges for authentication     
Bug Attributes
Type     B - Defect     Fixed in Product Version     
Severity     See FR          
Status     3-Accepted          
Created     18-Mar-2010          
Updated     27-Jul-2011          
Product Source     Sun          
Related Products
Fix Request Attributes:
Fix Request #     6936012/
Target     
Customer Status     3-Accepted
Severity     3-Medium
Duplicate Of     
Committed Version     
Fixed Version     
Integrated Version     
Verified Version     
Last Updated     2011-07-27 00:00:00 GMT+00:00
Description:
FULL PRODUCT VERSION :
java version "1.6.0_18"
Java(TM) SE Runtime Environment (build 1.6.0_18-b07)
Java HotSpot(TM) Client VM (build 16.0-b13, mixed mode, sharing)
ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]
A DESCRIPTION OF THE PROBLEM :
For various versions of Microsoft Internet Explorer (MSIE), the Java Plug-In (various versions of recent Java 6 Updates, including 18) re-challenges for authentication when an applet makes an HTTP(S) request for an authenticated resource from a web site and realm for which the browser session is already authenticated. [This web site is the source of the applet as well.] This occurs despite having checked the "Remember my password" checkbox in the browser authentication dialog.
We have had numerous customer complaints about this with MSIE 6, 7, and 8. Internally this has only been reproduced with MSIE 7 and HTTPS.
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Write an applet that makes an HTTP(S) request for an authenticated resource from a web site and realm for which the browser session is already authenticated. Test the applet in various MSIE versions with HTTP and HTTPS, checking the "Remember my password" checkbox in the browser authentication dialog.
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The applet should re-use the authentication credentials already established by the browser.
ACTUAL -
The applet re-challenges for authentication -- causing great user annoyance and frustration.
REPRODUCIBILITY :
This bug can be reproduced always.
CUSTOMER SUBMITTED WORKAROUND :
This works fine in Firefox, but that's not acceptable to many customers.
This reportedly occurs irrespective of whether the next generation plug-in is enabled or not.
Date Modified     2010-03-18 00:00:00 GMT+00:00
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