DOCUMENT:Q162670 05-MAY-1999 [exchange] TITLE :XCLN: 16-Bit Exchange Client Memory Issue PRODUCT :Microsoft Exchange PROD/VER:WINDOWS:4.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Exchange Windows 3.x client, version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== The following error message appears when you start a 16-bit Exchange Client: The MAPI spooler could not be started. Close and restart all mail- enabled applications. MAPI 1.0[000004c7] In most cases, this is a conventional memory issue. WORKAROUND ========== To work around this problem, perform the following: - Optimize conventional memory as much as possible (for example, by means of MEMMAKER from MS-DOS 6.0/6.2). - Disable all real mode device drivers and TSR programs you do not need. - Disable automatically started applications by WIN.INI via RUN=, LOAD=). - Use Program Manager (Progman.exe) as your shell. - Change the order in which your programs or drivers load to minimize memory fragmentation. - Remove as many third-party Windows drivers or virtual device drivers (VxDs) as possible. - Using Windows for Workgroups, uncheck the option "Use Network DDE" in control panel app network. - Configure the computer using NetBEUI or TCP/IP if possible. - Test a Win16 computer by means of the Memvalet utility (this forces DLLs to load into upper memory). The utility is unsupported and should only be used after the normal troubleshooting steps have failed. (ftp://ftp.microsoft.com/bussys/exchange/exchange-unsup-ed/Memval.zip) For more information about Win16 memory issues, please see the following articles in the Microsoft Knowledge Base: Q151359 XCLN: Out of Memory Errors Starting Schedule+ After Exchange Q150156 XCLN: Cannot Send from Word When Exchange Client Not Running Q112676 Troubleshooting Insufficient Memory Errors MORE INFORMATION ================ You may also receive this error when you try to access Windows Messaging e- mail in MSN 2.0. If so, try emptying your Temp directory, Temporary Internet Files directory, and History folders in your Windows directory and then rebooting the computer. ====================================================================== Keywords : Technology : kbExchangeSearch kbExchange400 kbExchangeClientSearch kbZNotKeyword3 Version : WINDOWS:4.0 Issue type : kbprb ============================================================================= 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.