Java: application locked by security setting

I have a web application that uses the Java 6 22 update and works fine until yesterday, and now all of a sudden, when I try to download a form from my application, it says: “The application is locked by security settings” I can’t upgrade to the latest Java b / c is incompatible, and I cannot set the Java security setting to Medium from high, as this is a risk. I have several users experiencing this problem, any ideas? I know that Windows has recently released its updates and I'm not sure if this could be a factor since I could not find anything, thanks.

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If changing the security level to the media does not help, you can go to the Windows Control Panel → Programs → Java. Go to the "Security" section and click "Edit Site List" ..., click "Add" and enter the location there (URL address where the application is located), and click "OK."

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Just set your Java security level to the middle or better whitelist of your Java application. Here's how to do it.

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, - Java. ?

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Perhaps you can use java webstart? See http://docs.oracle.com/javase/tutorial/deployment/webstart/deploying.html and Opening the JNLP file in Java 6 JRE instead of JRE 7

You can also try signing the jarfile of your applet if you haven't already.

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