Invalid File Access method configured

Microsoft.Office.Sharepoint.Server.2007.Invalid_File_Access_method_configured (Rule)

Excel Calculation Services provides a setting for configuring the file access method that is used for UNC and HTTP trusted locations. If the file access method is configured as impersonation, Excel Calculation Services must be able to delegate the end user credential for accessing files.

Knowledge Base article:

Summary

Excel Calculation Services provides a setting for configuring the file access method that is used for Universal Naming Convention (UNC) and HTTP trusted locations. If the file access method is configured as impersonation, Excel Calculation Services must be able to delegate the end user credential for accessing files.

Causes

The file access method is configured as impersonation, but the front-end Web server and Excel Calculation Services are configured to use the trusted subsystem method. Note: These settings are configured in Central Administration.

Resolutions

To resolve this problem, perform one of the following:

Reconfigure both the front-end Web server and Excel Calculation Services to use delegation instead of trusted subsystem. This can be configured in Central Administration.
Change the file access method to use the process account.

Element properties:

Target

Microsoft.Office.Sharepoint.Server.2007.MOSS.Application

Category

EventCollection

Enabled

True

Event_ID

5557

Event Source

Office SharePoint Server

Alert Generate

True

Alert Severity

Warning

Alert Priority

Normal

Remotable

True

Alert Message

Invalid File Access method configured

Event ID {0} from Source {2} on agent computer {3} has triggered this Alert Description : {1}

Event Log

Application

Member Modules:

ID	Module Type	TypeId	RunAs
DS	DataSource	Microsoft.Windows.EventProvider	Default
CollectData	WriteAction	Microsoft.SystemCenter.CollectEvent	Default
DataWarehousePublishData	WriteAction	Microsoft.SystemCenter.DataWarehouse.PublishEventData	Default
MOSS.GenerateAlert	WriteAction	System.Health.GenerateAlert	Default

Source Code:

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</Rule>