UMP not loading alarms - stays in "Loading" state

Document ID : KB000102315
Last Modified Date : 18/06/2018
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Issue:
UMP not loading alarms - stays in "Loading" state 
Does not know how the problem started
Environment:
UIM 8.51
UMP 8.51
nas 9.00HF3
ems 10.17
 
Resolution:
Here is what we did to restore UMP USM functionality

Stopped probes in this order:
nas
alarm_enrichment
ems
trellis

Start in order
trellis
ems
alarm_enrichment
nas

Then we stopped and started maintenance_mode probe

Then we stopped and started (or simply started) all wasp probes.

Restored full functionality.