Get rid of the “UNKNOWN” publisher from applet security warning

Question

I\'m trying to sign an applet so that the publisher does not appear as \"UNKNOWN\" :

Answer 1

The same strange "UNKNOWN" Message appeared when I changed my signing certificate. I imported the certificate of my signing keystore into cacerts (so that my self signed jar would be accepted), but the java cache held the old jarfile. Then when starting the "old" applet with the "new" certificate, a message similar to the one above appeared.

Solution: clear the java cache (via java control panel or javaws -uninstall).

This just in case someone (like myself) stumbles upon this Thread while searching for this Error Message.