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Event ID 7020 — Service Start Operations

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Applies To: Windows Server 2008

Service Control Manager (SCM) starts services and driver services. It also reports when services fail to start or hang while starting.

Event Details

Product: Windows Operating System
ID: 7020
Source: Service Control Manager
Version: 6.0
Symbolic Name: EVENT_DEPEND_ON_LATER_GROUP
Message: Circular dependency: The %1 service depends on a group which starts later.

Resolve

Remove the circular dependency

This issue occurs because the  manually started services have a circular dependency chain, for example, service A depends on service B which depends on service C which depends on service A. To resolve this issue, remove the circular dependency.

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To list the dependent services or service groups for a service and remove the circular dependencies:

  1. At a command prompt, type sc qc service_name to view the other services and service groups on which service_name is dependent.
  2. Type **sc config **service_name depend= service_name/+group_name (where service_name is the name of any noncircular dependent service and group_name is the name of any noncircular dependent service group) to remove dependencies on individual circular services or service groups.

Note: If the service has no dependent services or service groups, enter a null value for the depend parameter.

For more information about the sc command, see SC Command Reference Help (https://go.microsoft.com/fwlink/?LinkID=84961).

Verify

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To verify that a service has started:

  1. Open the Services snap-in by clicking the Start button, Control Panel,  and Administrative Tools, then double-clicking Services.

    Note: For Windows Vista, use the Classic View display option in Control Panel to see the Administration Tools.

  2. In the details pane of the Services snap-in, locate the name of the service and verify that the Status column shows a status of Started.

Service Start Operations

Core Operating System