Microsoft KB Archive/198920

= XWEB: OWA Is Not Designed for Use with Exchange Server 4.0 =

Article ID: 198920

Article Last Modified on 10/28/2006

-

APPLIES TO


 * Microsoft Exchange Server 4.0 Standard Edition
 * Microsoft Exchange Server 5.0 Standard Edition
 * Microsoft Exchange Server 5.5 Standard Edition
 * Microsoft Outlook Web Access 5.5
 * Microsoft Exchange Server 5.5 Service Pack 1

-



This article was previously published under Q198920



SUMMARY
Users are attempting to access their Exchange Server 4.0 mailboxes using Outlook Web Access (OWA). OWA was a new feature introduced with Exchange Server 5.0; therefore, it is not available for Exchange Server 4.0.

OWA may work in some read-only cases, but it is not tested or supported for Exchange Server 4.0, only for Exchange Server 5.0 and 5.5.



MORE INFORMATION
OWA relies upon Collaborative Data Objects (CDO) technology that was not present in Exchange Server 4.0. At that time, the technology was referred to as "Active Messaging," which later became CDO in upgrades and a renaming of that technology.

Although you may get some response from Exchange Server 4.0 when you attempt to use OWA with that version, key objects needed for full functionality, such as Send and Reply, are beyond the capabilities of 4.0. The users must have their mailbox accounts upgraded or moved to Exchange Server 5.O or above to obtain full OWA functionality.

Keywords: kbinfo KB198920

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.