Getting JAR/JNLP certificate issues with both Java7 and Java8

Document ID : KB000097549
Last Modified Date : 22/05/2018
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Issue:
Trying to run the Thin Workstation 10.7 client and all run fine, then get a dialogue stating:

"Unable to launch the application"

On clicking details,:

"Error: JAR resources in JNLP file are not signed by same certificate"

Get the same with IE, Chrome, Java7, Java8, on Pre-production and Production environments.
Aso tried clearing out the caches in both Java and the browsers. No difference.
Environment:
CA Wily Introscope Workstation 10.7.0.45
Cause:
This is a regression bug.
Resolution:
- Fixed in hotfix HF3  - APM10.7.0HF03b05-1.zip