we have been experiencing problems with launching Sentinel Control
Center today. The cause is that the code signing certificate used for
launching SCC jars expired yesterday and there's no timestamp. With
default Java security configuration it ends up with a message
(Application Blocked by Java Security) and SCC not being launched.

Same problem applies for and versions.

There's a workarround - put your sentinel site into Exception site list
in Java Control Panel. Then, you'll get warning about certificate being
expired, but you can skip the warning and launch the control center.

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