XWEB: VBScript Error '800a03e3' When Accessing OWA Server 5.5

• Microsoft Exchange Server, version 5.5
• Microsoft Outlook Web Access, version 5.5

SYMPTOMS

You may receive the following VBScript error on your Web Browser when you attempt to connect to Outlook Web Access (OWA). The script name and line number may not necessarily be identical, but the error code will remain the same:

   Microsoft VBScript runtime error '800a03e3'

   Unknown runtime error

   /exchange/USA/lib/session.inc, line 300"

CAUSE

This can occur when the server is very busy or when you try to connect to a mailbox that does not exist but is authenticated as a real user.

STATUS

Microsoft has confirmed this to be a problem in Microsoft Exchange Server, version 5.5. A supported fix is now available, but has not been fully regression-tested and should be applied only to systems experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft Recommends that you wait for the next Service Pack that contains this fix. Contact Microsoft Technical Support for more information.