Knowledge Base

XCLN: 16-Bit Exchange Client Memory Issue

Article ID: 162670

Article Last Modified on 10/28/2006

Microsoft Exchange Client 5.5

This article was previously published under Q162670

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:

151359 XCLN: Out of Memory Errors Starting Schedule+ After Exchange

150156 XCLN: Cannot Send from Word When Exchange Client Not Running

112676 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: kbprb KB162670