InfoPath Forms Services postback failure - Event 5374 (SharePoint Server 2010)
Applies to: SharePoint Server 2010 Enterprise
Alert Name: InfoPath Forms Services postback failure
Event ID: 5374
Summary: Some form actions, such as running business logic, switching views, or submitting the form, require a postback to the server. An error occurred when this postback was processed by InfoPath Forms Services in Microsoft SharePoint Server 2010.
Symptoms: One or more of the following symptoms might appear:
An error message appears when filling out the form.
This event appears in the event log: Event ID: 5374 Description: There was a form postback error. (User: <UserName>, Form Name: <FormName>, Request: <https://servername/_layouts/Postback.Formserver.aspx>, Form ID: <FormID>, Type: <ExceptionType>, Exception Message: <ExceptionMessage>)
Cause: An internal server error occurred.