DOCUMENT:Q247085 06-AUG-2002 [exchange] TITLE :XWEB: Error: Failed to Connect to the Microsoft Exchange Server PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:5.5 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Outlook Web Access, version 5.5 Service Packs 1, 2, 3 - Microsoft Exchange Server, version 5.5 ------------------------------------------------------------------------------- SYMPTOMS ======== If you log on to a Microsoft Exchange Server computer by using Microsoft Outlook Web Access (OWA), the following error message may be displayed: Failed to connect to the Microsoft Exchange Server, () CAUSE ===== The Mapisvc.inf file, in the Winnt\System32 folder, is modified or missing. RESOLUTION ========== Replace the Mapisvc.inf file with an unmodified copy of the original, or add the following section to the existing file: [MSEMS] PR_DISPLAY_NAME=Microsoft Exchange Server Sections=MSEMS_MSMail_Section PR_SERVICE_DLL_NAME=emsui.dll PR_SERVICE_ENTRY_NAME=EMSCfg PR_RESOURCE_FLAGS=SERVICE_SINGLE_COPY WIZARD_ENTRY_NAME=EMSWizardEntry Providers=ems_dsa, ems_mdb_public, ems_mdb_private PR_SERVICE_SUPPORT_FILES=emsui.dll, emsabp.dll, emsmdb.dll MORE INFORMATION ================ The Mapisvc.inf file is created when Exchange Server is installed. To fix the problem, replace the Mapisvc.inf file with a copy of the file from another Exchange Server computer. Additional query words: ====================================================================== Keywords : Technology : kbOutlookSearch kbExchangeSearch kbExchange550 kbZNotKeyword2 kbOWASearch kbOWA550SP1 kbOWA550SP2 kbOWA550SP3 Version : WINDOWS: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 2002.