Anyone know what this means ? I have received a 1530 error at least once a day for the past 3 days. Sometimes it has been at the same time of logoff, but not always.

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From Microsoft site: This behavior occurs because Windows automatically closes any registry handle to a user profile that is left open by an application. Windows Vista does this when Windows Vista tries to close a user profile.

Note Event ID 1530 is logged as a Warning event. The application that is listed in the event detail is leaving the registry handle open and should be investigated.

Event ID: 1530 may be logged in the Application log on a Windows Vista or newer computer