Java Blocked Content Warning

Introduction
How To Make It Go Away
How To Find the Java Control Panel
Cause
Source

Introduction

If after updating your Java, you find that you are receiving a new error or warning (Image 1) that prevents you from making and saving your edits, you will need to make adjustments to the Java Control Panel on your computer.

Image 1
java security warning offering block or don't block options

How To Make It Go Away

  1. If you’re in the middle of editing content, save it to a text editor (Notepad, TextEdit, Word, etc.)
  2. Close your browser
  3. Open the Java Control Panel (below)
  4. Click on the Advanced tab
  5. Under Mixed Code, select “Enable - hide warning and run with protections” (Image 2)
  6. Click OK to close the Control Panel
  7. Restart your  computer (just in case)

Image 2
Java Control Panel with Advanced Tab and Correct Selection highlighted


How To Find the Java Control Panel

Windows XP

  • Click on the Start button and then click on the Control Panel option.
  • Double click on the Java icon to open the Java Control Panel.

Windows 7, Vista

  • Click on the Start button and then click on the Control Panel option.
  • In the Control Panel Search enter Java Control Panel.
  • Click on the Java icon to open the Java Control Panel.

Windows 8

  • Use search to find the Control Panel
  • Press Windows logo key + W to open the Search charm to search settings

OR

  • Drag the Mouse pointer to the bottom-right corner of the screen, then click on the Search icon.
  • In the search box enter Java Control Panel
  • Click on Java icon to open the Java Control Panel.

Mac OS X 10.7.3 and above

  • Click on Apple icon on upper left of screen.
  • Go to System Preferences
  • Click on the Java icon to access the Java Control Panel.

Cause

Signed Java Web Start applications and applets that contain signed and unsigned components could potentially be unsafe unless the mixed code was intended by the application vendor. As of the Java SE 6 Update 19 release, when a program contains both signed and unsigned components, a warning dialog is raised.

Source

http://java.com/en/download/help/error_mixedcode.xml