Reboot of the KMS server.
(Also uninstall Microsoft update KB3161639 for Windows 7 SP1, Windows Server 2008 R2 SP1, Windows RT 8.1, Windows 8.1)
Once the cause of the alarm has been determined and resolved, the alarm itself may need to be "Acknowledged" to clear it.
Similarly, Verint by activating the Verint provided certificate and updating the security tab of the WFO Enterprise Management page with the login credentials and on the RSAProvider.cfg file on the server because the site was on HFR 8 (which does not update security information automatically).