Developer Documentation Library > Interviewer - Server > Configuration and customization > Registry settings > Engine registration registry settings
 
Engine registration registry settings
Registry settings for the DPM’s engine registration process are stored under the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\SPSS\MRPropertyManagement\2.0\Service
Settings
RegisterEnginesOnStart
The DPMServerService registers the local interviewing engines with all mrIWeb instances when it starts. See also RegisterExistingEnginesOnly.
To disable registration on service startup, set this property to 0.
Default value: non-zero
UnregisterEnginesOnStop
The DPMServerService unregisters the local interviewing engines from all mrIWeb instances when it stops.
To disable this behavior on service shutdown, set this property to 0.
Default value: non-zero
RegisterExistingEnginesOnly
If RegisterEnginesOnStart is enabled (non-zero), this setting controls the registration behavior.
0: Registers all local interview engines.
non‑zero value: Only engines that are unregistered are registered. Local interview engines which are defined by the LocalEngineURLs registry value but which are not unregistered in mrIWeb are ignored.
Default value: 0
See also
Registry settings