Forms 11g - Windows Java client hangs with message "The application's digital signature cannot be verified."

After modifying the webconfiguration values for the paremeters "webutilArchive" and "archive", I had a very annoying problem.
When I activated the application url, I got the following popup message and I couldn't accept/deny this message.

Warning - Security
The application's digital signature cannot be verified.
Do you want to run the application?

Name:      ... 
Publisher: ... 
From:      ... 
[ ] Always trust content from this publisher. 

[Run] [Cancel]

Although, there is a checkbox in the message and 2 buttons, I couldn't do anything else than shutting down my browser through the Windows Task Manager.

There are 2 solutions for this problem:

(1) Using this sequence of jar-files for webutilArchive

webutilArchive=jacob.jar, frmwebutil.jar

More info on Oracle Support:
WebUtil Form HangsWhen Acknowledging Security Warning - The application's digital signature cannot be verified [ID 1328039.1]

(2) Applying patch 9463433 if the archive parameter is the cause of the problem
More info on Oracle Support:
Windows Java Client Hangs On Accepting Not Verified Signature Of jar Files [ID 1173365.1]