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Event handler failed to load - Event 6644 (SharePoint 2010 Products)

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Applies to: SharePoint Server 2010, SharePoint Foundation 2010

Alert Name:   Event handler failed to load

Event ID:   6644

Summary:   In Microsoft SharePoint Server 2010, you can bind an event handler to an event host (such as an entire site, a list, or a document library). By binding an event handler to an event host, you can use document library events to start other processes, such as workflow processes.

Symptoms:   This event appears in the event log: Event ID: 6644 Description: Event manager error: <error>.

Cause:   One or more of the following might be the cause:

  • The custom event receiver assembly cannot be found, or it is corrupted.

  • The SharePoint Server 2010 assembly cannot be found, or it is corrupted.

Resolution:   Contact the manufacturer of the faulty custom event receiver

  • If the faulty assembly is corrupted, and it is not a SharePoint Server 2010 assembly, contact the manufacturer of the faulty event receiver assembly for more information.

Resolution:   Repair your product installation

  1. Repairing the installation will require you to restart the server. Web application modifications and other changes to settings will be preserved.

    Note

    You must be a member of the Administrators group on the local computer to perform this task.

    To repair the Microsoft SharePoint Server 2010 installation:

    1. In Control Panel, open Programs and Features.

    2. Select your installation of SharePoint Server 2010 from the list, and then click Change.

    3. In the SharePoint Products Configuration Wizard, select Repair, and then click Continue.

    4. After completing the changes in the SharePoint Products Configuration Wizard, verify that the event handler assembly is either repaired or removed from all farm servers.

    5. Retry the operation that triggered the event handler. These events should not continue to appear in the Windows event log.