Release : 15.8
Component : Endpoint
The Symantec extension is being controlled via GPO, and the GPO is pushing the previous extension.
DLP version 15.7 and previous used the extension eelojgpfkmhiikmhkineneemcahoehjo
As of DLP 15.8 the extension has changed to dehobbhellcfbmcaeppgfjhnldeimdph
This error is being caused by mismatched extensions.
AKA the 15.7 extension is being pushed to 15.8 endpoints.
Update your GPO to reflect the new extension.