OL2000: MAPI Call "cmc_logon( )" for 16-Bit Application Does Not Work When Used in Conjunction with Clean Install of Outlook 2000 (255904)
The information in this article applies to:
This article was previously published under Q255904 SYMPTOMS
If you compile an application that uses the simple Messaging Application Programming Interface (MAPI) call, cmc_logon(), to run in 16-bit mode by using Microsoft Visual Studio version 1.5, when you run the application you may receive an error message that states that cmc_logon() does not work with an unknown error.
CAUSE
This issue can occur because some CLSIDs (class IDs) that are required for simple MAPI 16-bit applications are not registered during a clean Outlook 2000 installation.
RESOLUTION
To resolve this issue, create a text file with a .reg extension and add the following entries to the file:
REGEDIT4
[HKEY_CLASSES_ROOT\CLSID\{00020344-0000-0000-C000-000000000046}]
@="MAPILogonRemote"
[HKEY_CLASSES_ROOT\CLSID\{00020344-0000-0000-C000-000000000046}\InprocServer32]
@="mapisrvr.exe"
[HKEY_CLASSES_ROOT\CLSID\{00020344-0000-0000-C000-000000000046}\LocalServer32]
@="mapisrvr.exe"
After you create the file, double-click the file that you just created in Windows Explorer.
WORKAROUND
To work around this issue, upgrade from Outlook 98, rather than performing a clean installation of Outlook 2000.
| Modification Type: | Major | Last Reviewed: | 10/2/2003 |
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| Keywords: | kbprb KB255904 |
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