XWEB: IIS May Not Work When OWA Is Being Heavily Accessed

ID: Q234671

The information in this article applies to:

Microsoft Internet Information Server version 4.0
Microsoft Outlook Web Access, version 5.5 Service Packs 1, 2

SYMPTOMS

It is possible that when Outlook Web Access (OWA) is being heavily used the CDO component may fail in Internet Information Server (IIS). The symptoms may vary including Dr. Watson messages and messages reporting that IIS is no longer responding or accepting client requests.

WORKAROUND

Restart IIS for continued normal operation.

RESOLUTION

To resolve this problem, obtain the latest service pack for Exchange Server version 5.5. For additional information, please see the following article in the Microsoft Knowledge Base:

Q191014 XGEN: How to Obtain the Latest Exchange Server 5.5 Service Pack

The English version of this fix should have the following file attributes or later:

Component: OWA

File name	Version
Emsmdb32.dll	5.5.2639.0

STATUS

Microsoft has confirmed this to be a problem in the OWA component of Microsoft Exchange Server 5.5. This problem was first corrected in Exchange Server 5.5 Service Pack 3.

Additional query words:

Keywords : EXC55SP3Fix
Version : WINDOWS:5.5; winnt:4.0
Platform : WINDOWS winnt
Issue type : kbbug