I found the solution:
NetWorker 9.2 hosted on Windows Server 2012 R2. In the Monitoring tab, the All Sessions no longer display anything although backups are working fine. In the Policies pane, the Status does not show, it is also Never run for all policies. While all functions seem to work (backups and restores work, and I can browse the savesets) I can no longer see the job status or Show details of the jobs. I tried to do a complete reinstall of NetWorker 9.2. I deleted C:\Program Files\EMC NetWorker, however even after reinstall it did not fix the issue. Any ideas? [IMAGE]  
NetWorker 9.2 - Status / Session does not show