Excel unauthorized attempt to access a session - Event 2011 (SharePoint Server 2010)

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Applies to: SharePoint Server 2010

Alert Name:   Excel unauthorized attempt to access a session

Event ID:   2011

Summary:   Excel Services Application maintains individual user sessions. Sessions maintain state related to workbook calculations, parameters that a user sets, interactions that a user has with a live workbook, and data returned from a data source as a result of a data refresh operation. Sessions are maintained per user per workbook, and can contain private data and information. Sessions are available only to the user that started the session. The issue in this case is that a user who did not start a session attempted to access data from that session.

Symptoms:   One or more of the following symptoms might appear:

  • The user that attempted to access a session that the user did not start cannot view the workbook.

  • This event appears in the event log: Event ID: 2011 Description: Unauthorized attempt to access session by user <username>. Session belonged to user <username of user that started the session>. [Session: <session id> User: <username>].

Cause:   A user that did not start the session attempted to request data from the session.