Several Probes on Core HUB not restarting

Document ID : KB000125329
Last Modified Date : 25/01/2019
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Issue:
no connection to NIS database . Need help asap
Cause:
You cannot apply data_engine-9.02HF1.zip to UIM 8.51 - it is not supported and causes this problem.
Resolution:
CUSTOMER HAD installed data_engine data_engine-9.02HF1.zip

BUT this is ONLY for UIM 9.02 and he is running UIM 8.51 and it caused failure of get_connection_string due to unrecognized enryption.

Once he re-deployed data_engine 8.50 the issue was resolved and the probes could be started.