The Outlook Web Access web application failed to initialize. Invalid forms registry file %1 Line number = %2 Position = %3. ...

The Outlook Web Access web application failed to initialize.

Invalid forms registry file %1  Line number = %2  Position = %3.  You cannot define a base experience when you choose to inherit from another forms registry. The base experience of the other forms registry is always used.

The forms registry is a critical component of Microsoft Outlook Web Access. If this error is not addressed, users might not be able to access the Outlook Web Access client. The Help and Support Center provides information about troubleshooting the forms registry.