Stopping the Java Error “Your security settings have blocked a self-signed application from running” in Windows

My Problem

On Windows, when opening a Java based web application (In my specific instance, an HP ILO KVMoIP session), you receive the error “Application Blocked by Security Settings” and “Your security settings have blocked a self-signed application from running.”

Application Blocked by Security Settings. Your security settings have blocked a self-signed application from running.

My Solution

Open up the Java control panel that is located with the rest of your Windows control panels and select the “Security” tab. Your goal is to add the site in question to the “Exception Site List.” Note that this is probably a terrible thing in general, and mildly bad even if you know that the Java app you’re using is private, such as a with an ILO card on a protected LAN. The ultimate solution would be to use a signed SSL certificate that is recognized by your browser, however you get that done (Private PKI, public cert, etc.)

Applications launched from the sites listed below will be allowed to run after the appropriate security prompts.

Click the “Edit Site List…” button, put the URL that has your Java application into the list (in my case I just use the IP address of the ILO cards), and click “Add.”

Applications launched from the sites listed below will be allowed to run after the appropriate security prompts.

You will now be able to run your Java application after a sufficient amount of annoying warnings are casually dismissed while you hope nothing too James-Bond-villan-esque has happened to that Java application.

Running this application may be a security risk.

4 Comments

  1. Need owner/smart dude help - Client Help

    September 4, 2014 at 7:03 pm

    […] owner/smart dude help – Today, 07:03 PM this explains my situation Stopping the Java Error “Your security settings have blocked a self-signed application from ru… is there an Http:// for the webclient? becuase its required to override the security settings ive […]

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