Outlook Web Access did not initialize.A forms registry file is not valid %1 Line number = %2 Position = %3. The value %4 that is specified for the IsRichClient attribute is not a valid Boolean value. Change this property in the registry to contain True or False.The forms registry is a critical component of Outlook Web Access. If this error is not addressed, users might be unable to access the Outlook Web Access client. For more information about how to troubleshoot the forms registry, see the Help and Support Center.

Details
Product: Exchange
Event ID: 55
Source: MSExchange OWA
Version: 8.0
Symbolic Name: FormsRegistryInvalidUserOfIsRichClient
Message: Outlook Web Access did not initialize.A forms registry file is not valid %1 Line number = %2 Position = %3. The value %4 that is specified for the IsRichClient attribute is not a valid Boolean value. Change this property in the registry to contain True or False.The forms registry is a critical component of Outlook Web Access. If this error is not addressed, users might be unable to access the Outlook Web Access client. For more information about how to troubleshoot the forms registry, see the Help and Support Center.
   
Explanation

This error indicates that the value for the IsRichClient attribute in the specified forms registry is not valid.

   
User Action

To resolve this error, do one or more of the following:

  • Open the specified forms registry and edit the value for the IsRichClient attribute to either true or false, as required by your organization.

  • If you have difficulty resolving the issue, contact Microsoft Customer Support. For information about how to contact support, visit Microsoft Help and Support.

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.

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