DOCUMENT:Q198920 28-MAY-1999 [exchange] TITLE :XWEB: OWA Is Not Designed for Use with Exchange Server 4.0 PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:5.5; winnt:4.0,5.0,5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Server, versions 4.0, 5.0, 5.5 - Microsoft Outlook Web Access, version 5.5 - Microsoft Outlook Web Access, version 5.5 Service Pack 1 ------------------------------------------------------------------------------- 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. Additional query words: ====================================================================== Keywords : Technology : kbOutlookSearch kbExchangeSearch kbExchange500 kbExchange550 kbExchange400 kbZNotKeyword2 kbOWASearch kbOWA550 kbOWA550SP1 Version : WINDOWS:5.5; winnt:4.0,5.0,5.5 Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.