32-bit DLL Call From MSMAIL32 to MAPILogon Fails (130904)
The information in this article applies to:
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Server 3.5
- Microsoft Mail for PC Networks 3.0
- Microsoft Mail for PC Networks 3.2
This article was previously published under Q130904 SYMPTOMS
When making a dynamic link library call to MAPILogon from a 32-bit
application directly to MAPI32.DLL, the call will fail from a custom
command or a custom message in the Windows NT Mail client. The failure
occurs in a MAPI error 2 (MAPI_E_FAILURE) which implies a general failure.
CAUSE
This problem occurs when the extension DLL is called while the Mail32
internal lock is on. When the DLL attempts to call out to MAPI, MAPI
waits for the internal lock to be released and hangs.
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.5. A
fix to this problem is in development, but has not been regression-tested
and may be destabilizing in production environments. Microsoft does not
recommend implementing this fix at this time. Contact Microsoft Product
Support Services for more information on the availability of this fix.
Modification Type: | Major | Last Reviewed: | 12/5/2003 |
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Keywords: | kbSMAPICMC kbusage KB130904 |
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