When deploying probes via Admin Console the error ILLEGAL SID is displayed and the probes are not deployed

Document ID : KB000121776
Last Modified Date : 29/11/2018
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Probe deployment via Admin Console fails with ILLEGAL SID error. Rebooting the primary hub does not resolve the problem.
UIM 8.51
automated_deployment_engine 8.51
The probe automated_deployment_engine is responsible for deploying probes via Admin Console. The following error is seen in the probe log:

[attach_socket, automated_deployment_engine] (15) illegal SID, null 

The above error suggests that the automated_deployment_engine probe has lost its security settings which need to be reset.
Find the automated_deployment_engine probe in Infrastructure Manager, right click the probe and select Security > Validate and then click Yes for the process to begin.

It should now be possible to deploy probes via Admin Console.