Session timeout does not work as expected when publishing Exchange Outlook Web Access with UAG 2010

Microsoft Forefront Unified Access Gateway 2010 (UAG 2010) allows a user to define Inactive session timeout. The Inactive session timeout defines the maximum time a session can be inactive before it times out (see When publishing Microsoft Exchange Outlook Web Access 2010 (OWA 2010) using UAG 2010, the session may stay active even if there is no activity for longer than the value defined in the "Inactive session timeout" field.
The UAG 2010 configuration has a setting for Ignore requests in timeout calculations that contains a list of URLs that are ignored in the calculation of the Inactive Session Timeout settings (see
When a client issues a request to one of the URLs and methods define in this list that contain a body (like in a POST method), the request will still be counted as active even if it matches the settings in this list. In addition, some URLs are missing from the default list for OWA 2010.
To resolve this issue complete the following:

1. Install Service Pack 1 Update 1 for Forefront Unified Access Gateway (

2. After installing SP1, add the following URLs and methods to the Ignore requests in timeout calculations settings for the "Microsoft Exchange Server 2010" application:

1/owa.*UA=0.* POST

UAG; Unified Access Gateway; Timeout; OWA; Outlook Web Access
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 2621269 - Last Review: 03/07/2012 18:36:00 - Revision: 1.0

Microsoft Forefront Unified Access Gateway 2010, Microsoft Forefront Unified Access Gateway 2010 Service Pack 1

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