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Article ID: 887271 - Last Review: August 25, 2012 - Revision: 11.0

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This article lists the issues that Microsoft Product Support Services has identified as the top client/server support issues in Microsoft Exchange. This article contains links to relevant content. This article specifically addresses issues for the Professional and Premier customer segments for the following product areas:
  • Microsoft Outlook. This includes topics that are related to Microsoft Exchange connectivity.
  • Microsoft Outlook Web Access.
  • Exchange Mobility. This includes topics that are related to remote procedure call (RPC) over HTTP.

More information

1. Microsoft Outlook

1.1 Setup and deployment issues

828377  ( ) Supported installation methods for deploying Office 2003
829898  ( ) Support WebCast: Deploying Microsoft Office 2003 in an enterprise computing environment
"Overview of an Outlook deployment" in the Office 2003 Editions resource kit: (

1.2 Remote procedure call (RPC) troubleshooting

839862  ( ) How to troubleshoot the RPC Cancel Request dialog box in Outlook 2003 or in Outlook 2002
325930  ( ) How to troubleshoot connectivity issues that are caused by RPC client protocol registry entries
830914  ( ) You receive an "RPC is not configured properly" error message when you are using an Exchange Server e-mail account and you start Outlook 2003

1.3 Cached Exchange Mode and offline Address Book issues

870926  ( ) Description of Outlook 2003 with Cached Exchange Mode in an Exchange Server 2003 environment
871132  ( ) Exchange clients may download the whole offline Address Book when they try to download incremental offline Address Book changes in Outlook 2003
821299  ( ) Synchronization takes longer than expected in Cached Exchange Mode in Outlook 2003
826252  ( ) A folder that you created when Outlook is configured to use Exchange Cached Mode appears in Outlook, but you cannot view messages in that folder
823580  ( ) How to configure how the Offline Address Book is downloaded when you use Outlook 2003 in Cached Exchange Mode
831124  ( ) How to force Outlook 2003 to resolve proxy addresses and custom properties in Cached Mode

1.4 Security issues

817878  ( ) Attachments remain in the Outlook Secure Temporary File folder when you exit Outlook 2003
287887  ( ) Outlook 2003 and Outlook 2002 do not restrict access to attachments with an .eml file extension
290499  ( ) Administrator information about e-mail security features
"Customizing security settings by using the Outlook Security Template" in the Office 2003 Editions resource kit: (
"Configuring Outlook security features to help prevent viruses" in the Office 2003 Editions resource kit: (

1.5 Rules issues

826964  ( ) Rules that you created in Outlook 2002 are not visible in Outlook 2003, but the rules are visible in OWA
826265  ( ) Rules may become corrupted when you access them from multiple versions of Outlook

1.6 Calendar and meeting request issues

890436  ( ) How to troubleshoot missing and duplicate appointments
286166  ( ) Outlook Calendar and Task reminders do not appear as expected in Outlook 2002 and Outlook 2003
872839  ( ) Issues that are fixed in Outlook 2003 by Office 2003 Service Pack 1
829217  ( ) Considerations when you use the Delegate Access feature in Microsoft Outlook
"Outlook meeting requests: Essential do’s and don’ts" from the Microsoft Office Online Web site: (

1.7 Delegate Access issues

924470  ( ) Outlook delegate feature in mixed versions of Microsoft Outlook and Entourage
826968  ( ) You may receive an error message when a delegate tries to view a message in your Inbox in Outlook 2003 or Outlook 2002
309185  ( ) Meetings that are placed in an owner's calendar by a Delegate do not display free/busy information for additional meeting attendees in Outlook
"Allow a delegate to see private appointments" from the Microsoft Office Online Web site: (
"Delegate Access" from the Microsoft Office Online Web site: (

1.8 Mail item issues

291613  ( ) How to send e-mail messages that remain in your Outbox in Outlook 2003 and Outlook 2002

1.9 Local policies and Group Policy issues

826170  ( ) Administrators can use Office policy templates with the Group Policy settings of Windows
"Policy template files" in the Office 2003 Editions resource kit: (

2. Outlook Web Access

2.1 How to set up a front-end/back-end configuration

837852  ( ) Windows Clustering is not supported on front-end servers in Exchange Server 2003
822443  ( ) Front-end server considerations in Exchange Server 2003
"Hardening Exchange 2003 servers" (
"Introduction to Exchange Server 2003 and Exchange 2000 front-end and back-end topology guide" (
"Microsoft Exchange 2000 Server front-end and back-end topology" (

2.2 The authentication method causes OWA logon problems

282805  ( ) Basic authentication box is displayed when you log on to OWA
267906  ( ) How to set up OWA for UPN logon names
183545  ( ) NTLM authentication fails between two computers with OWA
327843  ( ) Troubleshooting Outlook Web Access logon failures in Exchange 2000 and in Exchange 2003

2.3 OWA problems that are caused by the IIS Lockdown Tool and the URLScan tool

309508  ( ) IIS Lockdown and URLscan configurations in an Exchange environment
325965  ( ) The URLScan tool may cause problems in Outlook Web Access

2.4 SMTP address of a user does not match the recipient policy, and OWA logon failures

269498  ( ) Cannot log on to an Exchange 2000 mailbox with Outlook Web Access
293386  ( ) HTTP 401 or 404 error messages when you access OWA implicitly or explicitly
812220  ( ) Using explicit logons with Outlook Web Access

2.5 Host header configuration, and incorrect configuration of the Internet Information Services default Web site

312422  ( ) "HTTP 404" error appears when you try to log on to OWA through a front-end server in a cluster
287726  ( ) How to configure host header and authentication information in Exchange 2000 Outlook Web Access on a Windows 2000 cluster server
248033  ( ) How system administrators can troubleshoot an "HTTP 404 - File not found" error message on a server that is running IIS
839357  ( ) How to redirect an HTTP connection to HTTPS for Outlook Web Access clients and how to redirect the Default Web Site to point to the Exchange virtual directory
328242  ( ) You receive an error message when you try to change passwords if OWA is not installed in the default Web site

2.6 A firewall causes problems in Outlook Web Access

267910  ( ) Outlook Web Access error message "Internal Server Error" with certain firewalls
328663  ( ) Outlook Web Access does not show contents of inbox or other folders
280132  ( ) Exchange 2000 Windows 2000 connectivity through firewalls
Exchange Server 2003 and Exchange 2000 Server front-end and back-end topology guide, "Chapter 6: Configuring firewalls" (

2.7 NTFS file system permissions cause logon problems in Outlook Web Access

327843  ( ) Troubleshooting Outlook Web Access logon failures in Exchange 2000 and in Exchange 2003

2.8 A default port has been changed, and public folders cannot be accessed in Outlook Web Access

278339  ( ) TCP/UDP ports used by Exchange 2000 Server
313905  ( ) Public folders are not accessible in OWA if you change the default port; fix requires Exchange 2000 Service Pack 1
313932  ( ) Public folders are not accessible in OWA if you change the default port; fix requires Exchange 2000 Service Pack 2
325920  ( ) Error message when you view public folders in Exchange System Manager

3. Exchange Mobility

888812  ( ) TechNet Support WebCast: An overview of RPC over HTTP in Microsoft Exchange Server 2003 and Microsoft Office Outlook 2003
For more information about the top issues that are related to Exchange Mobility, visit the following Microsoft TechNet Web site: (

Applies to
  • Microsoft Office Outlook 2003
  • Microsoft Exchange Server 2003 Enterprise Edition
  • Microsoft Exchange Server 2003 Standard Edition
  • Microsoft Exchange 2000 Server Standard Edition
kbtshoot KB887271
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