unable to clear specific alarm CONNECTION TO LANDSCAPE CANNOT BE ESTABLISHED

Document ID : KB000115445
Last Modified Date : 01/10/2018
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Issue:
We are unable to clear specific alarm "CONNECTION TO LANDSCAPE CANNOT BE ESTABLISHED Request to Landscape model failed due to an unknown error"

We also tried to clear the alarm by sending a clear code using VNMSH and getting connection not established error. We also tried restarting the SpectroSERVER, but this did not help. 
Cause:
Landscape communication is handled by the Location Server process (locserv.exe) which is handled by parent process processd.exe. From time to time you may get a hang up on a process and requires a restart. 
Resolution:
1. Restart locserv.exe process. If <SPECROOT>/lib/SDPM/partlist/LOCSERV.idb is configure to have processd restart the process automatically (which is set by default) it should come back once killed. 

2. Restart processd
- in <SPECROOT>/lib/SDPM there is a script to stop/start processd:

processd.pl stop
processd.pl start

Note: Restarting processd will bounce all child processes as well, and will shut down a running SpectroSERVER. It can be started back up once processd comes back up.