Howard, SU & Task Scheduler do not require WMI. The fnWMIAuthentication is WMI-based but I'm sure that the same can be accomplished with ADSI. However, it might even work by authenticating against a DC via the WMI-based UDF then continuing on with an ADSI call.
This might also be of help: INFO: User Authentication Issues with ADSI WinNT Provider
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There are two types of vessels, submarines and targets.
