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How to solve: java.lang.SecurityException: Missing required Permissions manifest attribute in main jar

You either need to lower your Java security to medium (you can bring security of Java back to high after that)


You add Java to Exception Site List:

The Exception Site List feature allows end users to run Java applets and Java Web Start applications that do not meet the latest security requirements. Rich Internet Applications that are hosted on a site in the exception site list are allowed to run with the applicable security prompts.


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