Knowledge Base

Increased CPU usage and poor performance may occur when Outlook Web Access uses an SSL connection to a Exchange Server 2003 computer in a cluster that is running Windows Server 2003

Article ID: 843546

Article Last Modified on 10/30/2007

APPLIES TO

Microsoft Exchange Server 2003 Service Pack 1

SYMPTOMS

When you configure Microsoft Outlook Web Access to use a Secure Sockets Layer (SSL) connection to a Microsoft Exchange Server 2003 computer that is running in a Microsoft Windows Server 2003 cluster, there may be a big increase in the usage of processor resources by the Lsass.exe process and by the Resrcmon.exe process. Additionally, the performance of the Exchange Server 2003 computer may be poor.

When you view the application log, you may see an event that is similar to the following:

Event Type: Error
Event Source: MSExchangeCluster
Event Category: Services
Event ID: 1014
Date: Date
Time: Time
User: N/A
Computer: Computer Name
Description: Exchange HTTP Virtual Server Instance - (GENESIS): IsAlive checking for this resource failed due to timeout

RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites

This hotfix requires that you have installed Exchange Server 2003 Service Pack 1. For additional information about how to obtain the latest service pack, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Restart requirement

You do not have to restart your computer after you apply this software update.

Hotfix replacement information

This hotfix replaces 843226.

File information

The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

   Date         Time   Version            Size    File name
   --------------------------------------------------------------    
   10-Jul-2004  01:58  6.5.7232.13       133,120  Exres.dll

WORKAROUND

To work around this problem, disable the SSL connection, and then restart the server.

STATUS

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

MORE INFORMATION

For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates