Problem

Sentinel Code Signing certificate expires on December 10th 2020.

As a result you won't be able to launch Sentinel Correlation, Sentinel Administration, and Dashboard Viewer(Deprecated). These modules will be blocked by the Java security.

This is impacting Sentinel installed with Service Packs starting from SP10 up to SP21

Reason

Your security settings have blocked an application signed with an expired or not-yet-valid certificate from running

Resolution

— Temporary solution:

In the Exception Site List of the java client, add the Sentinel base URL and all URLs of the modules: Sentinel Correlation, Sentinel Administration, and Dashboard viewer

https://<Sentinel_host>:1309

https://<Sentinel_host>:1309/SentinelAdministration.jnlp

https://<Sentinel_host>:1309/SentinelCorrelation.jnlp

https://<Sentinel_host>:1309/SentinelViewer.jnlp

— Permanent Solution:

Install Sentinel 4.2.0 SP 22, available starting with December 31st 2020 which delivers new jars signed with new certificates