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Summary

WebCenter Viewer and WebCenter Workflow Editor are not working anymore after updating to Java 7 update 51.

Symptoms

• You get error messages regarding the security when trying to access the Viewer or the Workflow Editor.
• While working in WebCenter, a dialog pops up with the error message: "SecurityException Error".
• Error message: "Missing required Permission manifest attribute in main jar".

Solution

Upgrade to WebCenter 12.1.2.

For customers who are not able to plan a fast upgrade, hotfixes are made available:

Hotfixes are now available for several affected versions of WebCenter 12.x:

For WebCenter 10.1, the following hotfixes have been prepared:

Workaround

1. Go to the Java control panel or Java Preferences on your system:
   1. Windows: An entry should be available in the Control Panel classic view. The Java Control Panel is listed under Programs. If you cannot find it there, try searching for Configure Java in your Windows Start menu.
   2. Mac OS 10.6: Open the Finder and navigate to Applications > Utilities > Java Preferences.
   3. Mac OS 10.7 or higher: Open System Preferences > Java.
2. You can leave the setting on the default ('High' as shown in the screenshot below, or to Medium as for some customers it works only when setting to 'Medium'), but add an exception for your WebCenter site. Make sure to add your WebCenter site without the instance name (e.g. /WebCenter_Inst or /WebCenter).