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Editorial Team
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Asked: 2026-06-07T13:38:45+00:00

We have a Java applet that needs to run with full trust. While developing

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We have a Java applet that needs to run with full trust.

While developing and during pre-release tests we sign it using a self-signed certificate (the production version is signed with a real code signing certificte).

But when we try to start the self-signed applet on the prerelases of OS X 10.8, we can no longer choose to allow it to run. The “Allow”-button is simply disabled:

Disabled "Allow" button

If I press “Show Details…” I can choose to “Always trust” the certificate, but this makes no difference:

enter image description here

It works with the same version of the Java JRE on OS X Lion 10.7, so I suspect it is an issue with the OS and not the JRE.

Are there any workarounds?

I would prefer not to use a real code signing certificate for testing: signing with a real code signing certificate means that my company asserts that the applet is secure and should be trusted. We can hardly assert that before we have tested it.

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1 Answer

  1. Editorial Team

    It is new security feature in Mac OS X, by default only apps from Mac Store & from trusted developers are allowed to run there. Fortunatelly, it is easy to change, you have to allow this in Mac OS X preferences.

    Go to Preferences -> Security & Privacy and click on padlock to allow changes.

    Then in “Allow appications downloaded from” select “Anywhere”.

    After that, the button in Java dialog will be enabled.

    Mac OS X Security & Privacy Preferences

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