MSMAPI32.DLL is missing, corrupted or broken
Upon Launching Outlook in Windows, this error message comes up: Cannot start Microsoft Office Outlook. MAPI32.DLL is corrupt or the wrong version.
iTunes for Windows can give a similiar error message by the way. As can the MSN toolbar although both tend to say: The original 49 could not be located in the dynamic link library MAPI32.dll
The first problem seems to be caused by having Office 2007 installed, then retrograding back to Office 2003. Perhaps because of the costs or maybe because of compatibility issues.
Uninstalling Office 2007 does not remove or replace MSMAPI32.ddl. Instead you need to go to c:Program
FilesCommon FilesSystemMSMAPI1033MSMAPI32.DLL and delete or rename the file. Once that is done, launch Outlook . Reconfigure your mail settings and everything should be good to go.
The file may also be located in c:winntsystem32. There may be a backed up version of it that you can restore.
Do not under any circumstances download this file from the Internet, restore it from another machine or your original Windows Disks. This is most likely a virus.