PRB: Security Exception When Launching an Applet with Images

• Microsoft virtual machine

SYMPTOMS

When trying to launch a Java Applet with animation support from outside the DevStudio environment, the applet fails to launch properly and the Java log shows the following AppletSecurityException error:

*** Security Exception: Couldn't connect to with origin from file ****com.ms.applet.AppletSecurity.checkConnect at com/ms/applet/BrowserAppletFrame.getImageFromHash at com/ms/applet/BrowserAppletContext.getImage at java/applet/Applet.getImage...

RESOLUTION

To work around the problem, you can use either of the following methods:

• Use a build of the Microsoft Java VM newer than 1516. You can find a newer build at http://www.msdn.microsoft.com/
  
  -or-



• You can load the applet from a Web server, since it will not be a file URL and is allowed to connect to the host from which it was loaded. NOTE: the image files need to also exist on the server in the same or subordinate folder of the applet.
  
  -or-



• You can run the applet from DevStudio, which relaxes the security restrictions imposed on an applet. Essentially, placing the class files of the applet in the system classpath
  
  -or-



• You can place the applet in a signed CAB file, again to relax the security restrictions imposed on an applet.

MORE INFORMATION

This problem happens only under the Microsoft VM build 1516, when loading the applet via a file URL.

Steps to Reproduce Behavior

1. Install the Microsoft Java VM build 1516.



2. Create a default Applet Wizard applet, with animation support.



3. Launch Internet Explorer outside of Developer Studio by clicking on the project's HTML page.

REFERENCES

For more information on Cab&Sign, please refer to the Sample CabAndSign that comes with the Visual J++.

For additional information on the current release of the VM, please refer to the following Knowledge Base article:

Q163637 INFO: Availability of Current Build of Microsoft VM for Java

http://support.microsoft.com/support/visualj/

http://support.microsoft.com/support/java/

Additional query words:

Keywords : kberrmsg kbnokeyword kbVJ JVM
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbprb