User Profile Hive Cleanup Service

[Chris]

Overview

On Windows 2000 the service deals with application event log event 1000 from source Userenv where the message indicates that the profile is not unloading and the error is "Access is denied". On Windows XP and Windows 2003 the equivalent events are 1517 and 1524 from source Userenv.

To accomplish this the service monitors for logged off users that still have hives loaded. When that happens the service determines which applications have handles opened to the hives and releases them. It logs the application name and what registry keys where left open. After this the system finishes unloading the profile.

More | Here

[nellie2]

Have you got that in English please :huh: :ph34r:

[Chris]

WHAT IS UPHCLEAN

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UPHClean is a service that once and for all gets rid of problems with user

profile not unloading.

You are having profile unload problems if you experience slow logoff (with

Saving Settings for most of the time while logging off), roaming profiles

that do not reconcile, or the registry size limit is reached.

WHY DO PROFILES NOT UNLOAD?

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Many system and service processes do work on behalf of users.  When the work

is done the system or service process is responsible for releasing handles it

has to the user profile hive.  If this is not done by the service as the user

logs off the profile cannot be unloaded.

This problem in code can be caused by improper coding either in Microsoft

software or 3rd party software (e.g. printer drivers, virus scanner service,

etc).  With the information provided by the system there is no way to find

out what software needs to be corrected to allow profiles to unload.