Article ID: 255904
Article Last Modified on 10/26/2006
APPLIES TO
- Microsoft Outlook 2000 Standard Edition
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.
Additional query words: OL2K
Keywords: kbprb KB255904
