Windows XP originally had the Microsoft Java Virtual Machine installed, one of the Windows updates removes the MS JVM but may leave pieces installed which can mess up the Internet Explorer Web Browser control.
http://www.mvps.org/marksxp/WindowsXP/java.php
With Windows XP SP2 you may experience a problem with PWB and Sun Java. There is a setting in Sun Java that will cause it not respond to the Microsoft Internet Explorer Web Browser Control, which is what PWB uses. To correct this set "JAVA_PLUGIN_WEBCONTROL_ENABLE=True" in your Windows Environment Variables. This variable is not set by Sun Java by default.
You may also need to set the Windows Environment variable PATH to include the bin folder in the Sun Java program files Folder.
More information is available here.
http://bugs.sun.com/bugdatabase/view_bu ... id=4525262
--Scott
PWB and Java
Moderators: Tyler, Scott, PWB v2 Moderator
Java problem when using PWB
Adding the environmental variables as posted by Scott resolved the Java problem which had been preventing applications from launching in our Citrix connection session accessed using PWB. (Worked okay when accessed on same machine with IE). Thanks Scott!