Can not run Java Applets in Internet Explorer 11 u

Question

Today I updated my Java version to 7u51. After the installation, I cleared Java Cache, browser's Cache, and logged into a secure website that uses an Applet to provide certain additional services to the user.

The applet is not working anymore. I accessed http://www.java.com to check the Java version detected in Internet Explorer, and the java website says:

We are unable to verify if Java is currently installed and enabled in your browser.

Other browsers can check Java, and the mentioned applet works as expected:

As the applet works as expected in other browsers, I can assume the problem is not the Applet nor its deployment files/processes, but the compatibility of JRE 7u51 with IE 11. I would like to know if there is any workaround for this.

As additional measure, I used the java.com tool to uninstall any previous and unsecure JRE version (using Google Chrome). After double checking IE 11, I can see the Java Addons enabled and versioned to 7u51:

I know IE has been improved; even so, we recommend to our customers to use Google Chrome or Firefox as these browsers have proven to be more compatible with our web applications. Unfortunatelly, we can not force our customers to use certain browser due to the common organizational restrictions about programs usage, etc.

Thanks in advance for any help.

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Update (01/20/2014):

The following screenshot shows Internet Explorer 11 with Compatibility View configured for "java.com". It doesn't fix the problem in this case.

Answer 1

Update deployJava.js.

Our site uses a local copy of deployJava.js; updating it to the latest copy has fixed this issue in IE11. (We will probably just start using the web version of deployJava.js instead of a local copy).

However, a (very) similar problem persists for our Safari users.