Services Value is Missing or Inaccessible
Topic Last Modified: 2010-05-25
In Microsoft Exchange Server 2007 or earlier versions, the Microsoft Exchange Analyzer Tool reads the following registry entry to verify the existence of the Services string type value:
In Microsoft Exchange Server 2010, the Microsoft Exchange Analyzer Tool reads the following registry entry to verify the existence of the Services string type value on servers that are running the Mailbox Server role or the Client Access Server role:
Note Exchange Server 2010 servers that are running the Hub Transport server role, the Unified Messaging (UM) server role, or the Edge Transport server role do not have this registry key.
The Services string type value holds the path to the Exchange installation root. The Exchange Analyzer displays an error if it finds that the Services string type value is missing or is inaccessible. The absence of the path to the Exchange installation root may cause a failure of initialize critical drivers and protocols. If this failure occurs, it causes the Exchange information store and dependent services to fail upon startup.
To address this problem, follow the steps in Microsoft Knowledge Base article 285116, Exchange Store Does Not Start: Errors 7024, 1026, 9542, and 5000.