I have the new Mountain Lion 10.82 software version on my Mac as I needed it to be able to use java applet update 11. I downloaded and installed the security fix java update 11 on 27th January 2013 and it worked for a couple of days fine but now a sign with "blocked plug-in" appears. Even after installing it again it doesn't seem to work. Could anybody please help me?
MacBook Pro, OS X Mountain Lion (10.8.2)
There's apparently another security bug in Java.
Depending on what you're working with, you may be able to download and invoke the application outside of the browser — such as can be done with Minecraft — or you can both enable the Java JVM plug-in within the browser and also disable the version-check defenses in Xprotect (see the comments here for details) that are blocking the Java webstart stuff (again), if you need to run that stuff from the web browser.
Otherwise, Oracle will likely be providing an update to block the most recent attacks.
There are two other potential wrinkles here, where the Java JVM web plug-in disables itself after some interval of non-use, and there are also diagnostics issued when launching an app that isn't signed by a developer ID from Apple. Java checks for its own signatures, and Apple checks for its signatures, and the Java apps aren't signed with the Apple keys.
There's apparently another security bug in Java.
Depending on what you're working with, you may be able to download and invoke the application outside of the browser — such as can be done with Minecraft — or you can both enable the Java JVM plug-in within the browser and also disable the version-check defenses in Xprotect (see the comments here for details) that are blocking the Java webstart stuff (again), if you need to run that stuff from the web browser.
Otherwise, Oracle will likely be providing an update to block the most recent attacks.
There are two other potential wrinkles here, where the Java JVM web plug-in disables itself after some interval of non-use, and there are also diagnostics issued when launching an app that isn't signed by a developer ID from Apple. Java checks for its own signatures, and Apple checks for its signatures, and the Java apps aren't signed with the Apple keys.
Sounds like your plugin version got blacklisted by the system after a malware definition update - see this article for some details.
@Mr. Hoffman. Thanks very much for your answer to my problem. I'll try your approach and see if it works. I just so wish that Apple had a message explaining the problem for us all. On one hand it is good that it is blocked of course, but they just should've made it clear why it isn't working. Perhaps next time they will. :-)
Thanks red Menace. It does seem that you are right. I hope Oracle will get another fix soon, one that Apple will accept.
This appears to be documentation for the Oracle patch; this update includes fixes for 44 security vulnerabilities that can reportedly effect clients running Java.
Java applet doesn't work on my Mac
