When troubleshooting, keep in mind these issues:
When you make any changes to policies by clicking, , or on the page where the policies are listed, the is stopped. The driver is not restarted unless you click on that page.
This feature prevents the driver from granting or revoking entitlements in your production environment while your changes to policies are incomplete.
Similarly, the Entitlements Service Driver won’t start if more than one person appears to be editing Entitlement Policies at the same time.
Because one Entitlements Service Driver is used per driver set, an Entitlement policy can manage only users that are in a read/write or master replica on the server that is associated with that driver set.