auto-detection featured few bugs lately which convinced me that it must be deprecated/removed from the code in favor of adding manual set of the provider type. main reasons for that: a. the provider is type is known by the user b. identifying a provider by the rootDSE attributes is error-prone, not reliable etc... specially if the support matrix is growing c. auto-detection logic is duplicated (and not shared) between the backend code and the manage-domains tool (nevermind the reasons now) A manual set of the provider type requires a new configuration field for a domain and the question is the upgrade path which may look like * set the provider type to default Active Directory (because its more likely to be the provider type) * things not working - use the engine-manage-domains and choose the provider type. * optionally - keep the auto-detection (of the tool only!) if user wants to use it. your suggestion and thoughts... Thanks, Roy