Microsoft KB Archive Search

Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.

OWA application pool crashes with KeyNotFound exception in Exchange Server 2013

View products that this article applies to.

Symptoms

In a Microsoft Exchange Server 2013 environment, the OWA application pool crashes several times a day. In this situation, the following event is logged:

↑ Back to the top

Cause

This issue occurs because Exchange Server expects all meeting participants to be rendered. However, for some special meetings, some participants may not be rendered successfully. When this issue occurs, a KeyNotFound exception is displayed, and the OWA application pool crashes.

↑ Back to the top

Resolution

To fix this issue, install Cumulative Update 13 for Exchange Server 2013 or a later cumulative update for Exchange Server 2013.

↑ Back to the top

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

↑ Back to the top

References

Learn about the terminology that Microsoft uses to describe software updates.

↑ Back to the top

Applies to:

↑ Back to the top

Keywords: kbqfe, kbsurveynew, kbfix, kbexpertiseinter, kb

↑ Back to the top

Article Info

Article ID	:	3140102
Revision	:	1
Created on	:	1/7/2017
Published on	:	6/21/2016
Exists online	:	False
Views	:	241