PRB: MessageBox() after MAPIUninitialize Causes Access Violation

• Extended Messaging Application Programming Interface (MAPI), version 1.0
• Microsoft Exchange Server, versions 5.5 SP2, 5.5 SP3

SYMPTOMS

With Mapi32.dll version 5.5.2448.0(SP2) and 5.5.2650.12(SP3), if you log on to an offline profile with a MAPI_NO_MAIL flag and select "Work Offline", after MAPIUninitialize() call, MessageBox function stops with an access violation.

RESOLUTION

The possible workarounds are:

• Remove the MAPI_NO_MAIL flag.
• Call MessageBox function right before MAPIUninitialize().

MORE INFORMATION

Steps to Reproduce Behavior

1. Create an offline profile "ServerOffline", and make sure you can log on to work offline using Microsoft Outlook.



2. Compile and run the following program. When it prompts you to either "Connect" or "Work Offline", choose "Work Offline".



3. An Access Violation occurs when calling MessageBox (NULL, "Done", "Info", MB_OK);

   
   // link with mapi32.dll
   // Create an offline profile "ServerOffline"
   #include <mapix.h>
   #include <stdio.h>
   
   void main()
   {
   	HRESULT		hr = S_OK;
   	LPMAPISESSION		lpSession = NULL;
   	MessageBox(NULL, "Begin", "Info", MB_OK);
   
   	hr = MAPIInitialize(NULL);
   	hr = MAPILogonEx(0, "ServerOffline", NULL, 
   		MAPI_NEW_SESSION | MAPI_NO_MAIL | MAPI_EXTENDED | MAPI_PASSWORD_UI, &lpSession);
   	hr = lpSession->Logoff(0, 0, 0);
   	if (lpSession) lpSession->Release();
   
   	//MessageBox(NULL, "Before Uninitialize", "Info", MB_OK);
   	MAPIUninitialize();
   	MessageBox(NULL, "Done", "Info", MB_OK);
   } 

REFERENCES

For additional information about configuring the Microsoft Exchange Service to work offline, please click the article number below to view the article in the Microsoft Knowledge Base:

Q195436 Remote Mail, Offline Folders, and Working Offline

Additional query words: "Work Offline" MAPI_NO_MAIL

Keywords : kbMAPI kbMsg kbVC kbGrpMsg kbDSupport
Version : WINDOWS:1.0; winnt:5.5 SP2,5.5 SP3
Platform : WINDOWS winnt
Issue type : kbprb