We have upgraded from 8.4 SP2 to 8.51 and everything was working fine. All of sudden USM stopped working and we are getting a long java error while opening to UMP. Few of the initial lines are mentioned below for reference.
An unknown error has occurred.
Refreshing your browser may resolve the issue.
com.firehunter.ump.exceptions.DataFactoryException : There are no alarm services available!
Please check the log for more information.
(1) error, There are no alarm services available!