MSExchange OWA 46

  • Article

 

This article provides an explanation and possible resolutions for a specific Exchange event. If you don't find what you’re looking for here, try searching Exchange 2010 Help.

Details

Product Name

Exchange

Product Version

14.0

Event ID

46

Category

Proxy

Symbolic Name

ProxyErrorCASCompatibility

Message Text

Client Access server "%1", running Exchange version "%2", is proxying Outlook Web App traffic to Client Access server "%3", which runs Exchange version "%4". To ensure reliable interoperability, the proxying Client Access server needs to be running a newer version of Exchange than the Client Access server it is proxying to. If the proxying Client Access server is running a newer version of Exchange than the Client Access server it is proxying to, the proxying Client Access server needs to have an Outlook Web App resource folder (for example, "<Exchange Server installation path>)\ClientAccess\owa\8.0.498.0" that contains all the same versioned resource files as the Client Access server it is proxying to. If you will be running Outlook Web App proxying with mismatched server versions, you can manually copy this resource folder to the proxying Client Access server. After you copy this resource folder to the proxying Client Access server, you need to restart IIS before proxying will work.

Explanation

This Error event indicates that a Microsoft Office Outlook Web App 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 App 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 Exchange Server 2010, including Exchange 2010 service packs and software updates.

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

    1. Locate the Outlook Web App 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\V14\ClientAccess\Owa\<Version>, where C:\ is the directory to which Exchange was installed.

    2. Copy the Outlook Web App 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 <Version> is indicated by the version of the Client Access server referenced in the event description.

Contact a Microsoft Support professional to resolve this issue. To contact a Microsoft Support professional, visit the Exchange Server Solutions Center. In the navigation pane, click Assisted Support Options and use one of the assisted support options to contact a Microsoft Support professional. Because your organization may have a specific procedure for directly contacting Microsoft Product Support Services, be sure to review your organization's guidelines first.

For More Information

If you are not already doing so, consider running the Exchange tools, which have been created to help you analyze and troubleshoot your Exchange environment. These tools can help make sure that your configuration aligns with Microsoft best practices. They can also help you identify and resolve performance issues and improve mail flow. To run these tools, go to the Toolbox node of the Exchange Management Console. To learn more about these tools, see Managing Tools in the Toolbox.