• Article

Outlook Web Access was unable to proxy because the source and destination servers are running different versions of Outlook Web Access

 

Topic Last Modified: 2007-11-16

The Microsoft Exchange Server 2007 Management Pack for Microsoft Operations Manager (MOM) monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.

To learn more about this event, do one or more of the following:

  • Review the description of the event that includes the variables specific to your environment. From the MOM Operator Console, select this alert, and then click the Properties tab.

  • Review all events that have been logged that meet the criteria of this MOM alert. From the MOM Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description.

Details

Product Name

Exchange

Product Version

8.0 (Exchange Server 2007)

Event ID

46

Event Source

MSExchange OWA

Alert Type

Critical Error

MOM Rule Path

Microsoft Exchange Server/Exchange 2007/Client Access/Outlook Web Access

MOM Rule Name

Outlook Web Access was unable to proxy because the source and destination servers are running different versions of Outlook Web Access.

Explanation

This Error event indicates that a Microsoft® Office Outlook® Web Access proxy request failed when it was sent from one computer that is running the Client Access server role to another Client Access server. This error is logged when the version of the Outlook Web Access resources folders on one Client Access server does not match the version on the other Client Access server.

User Action

To resolve this error, take one or more of these steps:

  • Make sure that both Client Access servers are running the same version of Microsoft Exchange Server 2007. Both Client Access servers should run the same Exchange 2007 service pack and also have the same software updates applied.

  • If it is required that you run versions of Exchange Server that are not identical on your Client Access servers, follow these steps:

    1. Locate the Outlook Web Access resources folder on the Client Access server that received the proxy request. The default location of the resources folder is C:\Program Files\Microsoft\Exchange Server\ClientAccess\Owa\<Exchange Version>, where C:\ is the directory to which Exchange was installed.

    2. Copy the Outlook Web Access resources folder to the proxying Client Access server.

    3. Restart Internet Information Services (IIS) by using the command iisreset/noforce.

    Note   The name of the resources folder <Exchange Version> is indicated by the version of the Client Access server referenced in the event description.

For More Information

To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.

To review Exchange 2007 event message articles that may not be represented by Exchange 2007 MOM alerts, see the Events and Errors Message Center.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.